The name on the telegram was not one that belonged to any living person. It was signed simply “K. Adams,” and it carried one request: examine the body. By the time it reached Percy Peck, his father’s corpse was already aboard a train bound for Michigan, and Percy had buried his mother barely two months earlier.

He had no idea who K. Adams was. He took the message seriously anyway. The body he ordered examined belonged to John Edward Peck, a 71-year-old millionaire who had built a pharmaceutical fortune in Grand Rapids, Michigan.

When the doctors opened him, they found arsenic. The man they suspected was young, handsome, and charming—a talented tennis player who called himself a dentist—and he had married into the Peck family only months before. His name was Arthur Warren Waite. By the time he finished confessing, the arsenic would prove to be the least of his problems.

To understand what Arthur Waite took, you have to know who he took it from. John Edward Peck was born in Newburgh, New York, in 1844. He built his life in Grand Rapids, where in 1875 he and his brother Thomas founded Peck Brothers, a pharmaceutical company that began as a retail store and grew into a drug manufacturer. By the time it was sold in 1914, John Peck was a millionaire.

He served as a director of several banks and owned the majority of stock in a number of furniture companies. He had built something that would outlive him. His wife, Hannah, was born Hannah Carpenter in New York City in 1854. She and John married in 1876 and raised their children in Grand Rapids.

Among them were a son named Percy and a daughter named Clara, born in December 1887. They were a respectable, well-off, generous family. When Clara fell in love, her parents wanted her happiness and gave her everything they could. That generosity is what brought a killer to their doorstep.

Arthur Warren Waite was born in Grand Rapids in December 1887 to a family far less wealthy than the Pecks. He grew up tall, athletic, and well-liked. A gifted tennis player, he had a manner that made older people want to help him. He studied dentistry at the University of Michigan, and in the eyes of Grand Rapids’ young women, he was a catch.

But there was another side to Arthur, one his family would describe in court. His two brothers, Frank and Clyde, later swore that Arthur had been stealing since childhood. They said he stole money from their mother’s boarders, from fellow students, and from his employers. They said he could not pass a cat or dog without harming it.

No one can now verify every detail. Those statements came from relatives trying to save him from the electric chair. But the pattern they described matches the rest of his life. The story that followed Arthur after he left Michigan was striking.

It was said he won a place to study in Scotland and completed a two-year course in a matter of months. That earned him a reward and a post in South Africa. He left South Africa under a cloud of suspicion. Then he returned to his hometown of Grand Rapids, polished, well-traveled, and calling himself doctor.

He was not. Investigators later discovered that although Arthur appeared in directories as Dr. Waite, he was neither a registered physician nor a licensed dentist. The title was something he wore the way other men wore a fine coat.

Clara Louise Peck had met Arthur years earlier at a dance. When he returned from Africa, they met again. She was the daughter of one of the richest men in the city. He was the handsome young man who had seen the world and spoke of science and medicine as though he were destined for greatness.

Clara was impressed. Arthur proposed, and she accepted. They married on September 9, 1915, at Fountain Street Baptist Church in Grand Rapids. John Peck wanted his daughter to begin her new life in comfort.

He bought the couple a large, luxurious apartment at 435 Riverside Drive in New York City, in a new building called the Colosseum, overlooking the Hudson River. He promised Arthur a wedding gift of $50,000—an enormous sum in 1915. Then he changed his mind about how to deliver it. Instead of handing over the money directly, John arranged for the couple to receive $300 a month.

Remember that figure well. Three hundred dollars a month was a comfortable income, but it was not a fortune. Arthur Waite had married wealth he could not touch. In New York, Arthur told people he had opened a dental practice and was studying medicine under Dr.

Jacob Cornell, a friend of the Peck family. He talked about bacteriology with great enthusiasm. He said he wanted to help prevent disease. He was also a constant presence in New York society—an amateur tennis champion, an excellent dancer, an elegant figure in the best places.

And he began spending his time with a young woman named Margaret Horton. Margaret was a contralto from Dayton, Ohio, hoping to become an opera star. She was married to an engineer and inventor named Harry Horton. Arthur met her at the Berlitz School, where both were studying languages.

Arthur paid for her theatrical training. He rented them a studio at the Plaza Hotel where she could play the piano. On February 22, 1916, the two registered at the hotel as Dr. and Mrs.

A. W. Walters. Margaret always insisted their relationship was platonic.

In court, she would become the most dangerous witness Arthur ever faced. Arthur had other admirers who possessed money. Clara’s aunt, Miss Katherine Peck, was a wealthy woman whom the newspapers later described as his financier. Remember her too.

The apartment sat in a tree-lined part of Riverside Drive, a neighborhood of new buildings and wealthy tenants facing the water. It was a fitting home for a young married couple with means. But it was about to become something else entirely. After their first holiday together, Arthur and Clara invited Hannah to stay with them for the winter.

She arrived in January of 1916. Within hours of entering the apartment, Hannah felt unwell. She grew weaker day by day. Arthur, the young man who claimed to be studying medicine, took charge of her care.

When Hannah was too sick to leave her bed, he was the one who decided what she needed. On January 30, Hannah Peck died. She was 61 years old. Her doctors recorded the cause as kidney disease.

She had come to spend the winter with her daughter, but she never saw spring. Then Arthur surprised the family when they began making arrangements to send her remains home. He told them Hannah had wished to be cremated. No one could remember her ever saying that.

But Clara was deep in grief, and the family did not object. Hannah’s body was cremated, and her ashes were buried in the family plot in Michigan. No one examined her remains for poison. By the time anyone thought to ask, there was nothing left to examine.

About a month later, John Peck came to New York to be near his daughter. He was a widower now, and he carried his grief into the city. He arrived in good health. He did not stay that way.

He began vomiting. He complained of stomach pain and nausea. He struggled to eat. A doctor came to the apartment, yet John did not improve.

Arthur was, again, at the center of the sickroom. He told Clara her father disliked taking his medicine. So, Arthur said, he would mix it into the old man’s soup. When John complained about the taste, Arthur suggested Clara find a new cook.

Then he moved the medicine into John’s coffee, where it was easier to swallow. Clara believed her husband. She later told the district attorney it was just cold medicine. Meanwhile, Arthur was preparing for what came next.

Days before John’s death, he approached a physician named Dr. R. W. Moller and asked for help obtaining arsenic.

He explained it was to kill stray cats that were bothering his father-in-law. Dr. Moller suggested strychnine. Arthur insisted on arsenic.

In March, John Peck died. He had come to New York to comfort his daughter and was killed under her roof by the man she had married. His death was attributed to natural causes. Witnesses would later say Arthur had predicted it.

Once again, Arthur wanted cremation. John’s body was sent to Grand Rapids by train. Arthur pressed the family to cremate it there, just as with Hannah’s. In Michigan, Percy Peck was waiting.

He had lost his mother and now his father within barely two months. Both had died under the care of the same man. Then the telegram arrived. It was addressed to Mr.

and Mrs. Percy Peck, and its full text read: “Suspicion has been aroused, demand an autopsy. Do not disclose this telegram. ” It was signed K.

Adams. Percy did not know anyone by that name, but he took the message seriously. With the cooperation of the family pastor, Reverend A. W.

Wishart, and the family physician, Dr. Perry Schurtz, he arranged for an autopsy on his father’s body. The pastor and the doctor soon became investigators in their own right. The heart and lungs showed nothing suggesting natural death.

So John Peck’s stomach was sent to Dr. Victor Vaughan, dean of the medical college at the University of Michigan. When Dr. Vaughan finished his work, he had his answer.

There was arsenic in John Peck’s stomach. In New York, investigators for District Attorney Edward Swann, working with prosecutor Francis Mancuso in Grand Rapids, turned their attention to the man in whose home John Peck had died. The deeper they dug, the less Arthur resembled the professional he claimed to be. What they found instead was a bacteriologist without a laboratory.

Arthur had obtained deadly bacterial cultures from Cornell Medical College, the Rockefeller Institute, Willard Parker Hospital, and through the mail from the pharmaceutical company Parke Davis. To do so, he used letterhead belonging to respected physicians and forged their signatures. One account said he possessed enough bacilli to kill an army regiment. A search of his home revealed more of the same: bacterial cultures and books on toxicology.

Everything a poisoner could need was there, kept by a man who told the world he was studying to save lives. He had also bought arsenic, and there was the matter of the cats. Then there was the undertaker. Arthur realized that arsenic in a dead man’s body could be explained away if the embalmer used arsenic in his fluids.

Before the autopsy results came back, he telephoned a doctor named Moore. He first asked whether anyone could hold him responsible given that no nurse had been hired to care for the old man. Then he asked whether arsenic given before death would look different from arsenic in embalming fluid. Dr.

Moore told him it would still show up in the brain. So Arthur went to Eugene Caine, the undertaker who had prepared John Peck’s body. He asked Caine to provide a sample of embalming fluid containing arsenic. He pushed a roll of bills into the man’s coat pocket.

He promised to set him up for life. This information reached the investigators. Then came the question of who had sent the telegram. It was Elizabeth Hardwick, the niece of Dr.

Jacob Cornell, the family friend under whom Arthur claimed to be studying. On February 22, she was having lunch at the Plaza Hotel when she saw Arthur dining with a young woman. He introduced her, nervously, as a nurse. Elizabeth did not believe him.

When John Peck died, Dr. Cornell and another friend visited the Riverside Drive apartment. They found Arthur tense, agitated, and unwelcoming. Back home, they discussed it with Elizabeth.

She decided to act. She chose the name Kate Adams deliberately. In December 1898, a woman named Kate Adams had been the victim of the most famous poisoning case New York had ever seen. It was a simple act.

A woman sees a man at lunch, hears about a death, and sends a single telegram that would make any New Yorker think of poison. She had no evidence. She had no authority. She had only a feeling that the man at the Plaza had lied to her face, and that two people had died under his care.

Without that telegram, John Peck’s body would have been cremated just like Hannah’s. The only evidence would have vanished with the smoke. The trail of the young woman from the Plaza led to Martha Horton. She told investigators that she and Arthur were only studying languages, and that the hotel studio was so she could practice the piano.

But she also told them what Arthur had said after John Peck’s death. He asked her to leave the studio. He asked her to throw his belongings into the river. He asked her to buy him sleeping powders—trional and sulfonal.

He gave her a dollar for the drugs, a diamond ring, and $172 in cash. Perhaps he told her he would never see her again. Under interrogation, Arthur changed his story again and again. He claimed he bought the arsenic for the cats.

He claimed he bought it because his father-in-law was suicidal. Each explanation contradicted the last. On March 23, the New York newspapers carried the news: arsenic had been found in the body of John E. Peck.

That same day, investigators climbed the stairs to the Riverside Drive apartment and found Arthur Waite unconscious. He was in a coma. In his coat pocket were quantities of trional, sulfonal, veronal, and morphine. Police concluded he had attempted suicide before an arrest he saw coming.

He was taken to the hospital, and doctors brought him back. Then he was arrested. Investigators spent days assembling a picture from papers, poisons, and the memories of others. Now they had the man himself, and he was ready to talk.

He was ready to face the police. But he was not ready to face Clara. Clara could not believe it yet. She said, “I have absolute confidence in Arthur.

” She insisted he loved her parents too much to harm them. But she also told the district attorney things she did not yet understand. She told them about the soup and the coffee, the medicine her husband mixed for her father. And she told them something else.

Arthur had asked her to write a will leaving him everything she would inherit from her father. When she set aside charitable donations, he objected. The motive was clear. The prosecution would describe it as a crime driven by money.

The math was not hard to follow. A $50,000 gift reduced to $300 a month. Three hundred dollars a month was never enough. Arthur confessed.

He confessed more than once. In his room at Bellevue Hospital, still under the influence of drugs, he poured out the whole story to his brother Frank. Frank went to the press and said Arthur was not of sound mind. He said the case could be compared to the story of Jekyll and Hyde.

The comparison stuck. Then his lawyers, seeing no other way out, built their defense around the confession itself. Arthur Warren Waite would plead insanity. The trial began on May 22, 1916, before Judge Clarence Shearn.

Prosecutors argued that Arthur was a sane man who killed for money. His attorney, Walter Doyle, told the jury something else. Judge Shearn’s courtroom was packed. Women crowded in for a look at the handsome young dentist, and hundreds were turned away at the door.

Newspapers in war-torn Europe followed the case by cable. A jury was selected quickly. In his opening statement, Swann told them that Arthur had not only fed his father-in-law deadly germs but had placed chloroform over the man’s nostrils until he died. The prosecution called physicians, a druggist, and an undertaker.

Dr. Moore described the telephone call. Eugene Caine described the role of the banknotes. Piece by piece, they proved that John Peck died of arsenic, that Arthur predicted the death, that he planned the cremation, that he bought deadly germs, and that he tried to bribe the embalmer to hide the truth.

Almost all of them said the same thing about the man in the dock: the bacteriologist who taught him, the physician, the druggist, the undertaker—all described his manner as polite, considerate, and kind. The killer looked exactly as he pretended to be. Doyle said Waite suffered from a diseased mind. One hour he was as sane as anyone in the room; the next hour he was possessed.

Living inside him was another self, an alter ego Arthur himself called “the evil man from Egypt. ” The defense’s mental illness expert, Dr. Maurice Karpas, testified that Arthur believed his body and soul were separate and that his soul lived in Egypt. Arthur believed in reincarnation, and that evil man was, somehow, another life.

He would go to Central Park to fight him. He would try to run, but the evil man, according to Arthur, was too fast. He always caught him. Other defense experts described what doctors of that era called moral imbecility—a man who felt no shame and recognized the rights of others only through fear of pain.

Modern readers might choose different words, but the label mattered less to his lawyers than the outcome. The more crimes and vices they could prove against Arthur, the stronger their argument that he lacked self-control. The prosecution countered with its own psychiatric experts. They had examined Arthur before trial and found him sane.

Doyle likened his client to Jekyll and Hyde—a kind, generous son-in-law who turned into a killer when “the Egyptian” took control. The family took the stand to support him. Arthur’s brothers repeated their stories of stealing and cruelty to animals. His father testified that one relative had died in an asylum, another was confined to one now, and a third had been treated for mental disorders.

Percy Peck asked for only one thing at the trial. He wanted to sit close enough to watch the last hope fade from Arthur’s face. Then Arthur took the stand himself. The women were ordered out of the courtroom before he spoke.

He did not need them to go. He said everything in the same calm tone, like a man reading a shopping list. He said the first person he tried to kill was Clara’s aunt, Katherine Peck, his patron. He said he gave her germs, again and again.

Then he poisoned her with arsenic. Then he fed her ground glass. He even injected live germs into a can of fish before serving it to her. Katherine survived.

What saved her, according to Arthur, was the arrival of Hannah Peck. About Hannah, he was calm and very specific. He said he began poisoning her from her first meal. He gave her germs in her food: pneumonia, diphtheria, and influenza.

He put bacterial cultures on her food and in her nasal spray, and even injected them into her mouth during a dental procedure. When she finally took to her bed, he crushed twelve veronal tablets and gave them to her as well. At midnight, he said, he went to check on her and found her dead. He went back to bed.

He wanted his wife to be the one who found her. About John, he was even more detailed. He said he pumped chlorine gas into the old man’s room to irritate his throat before injecting him with germs. He took him for drives in the winter in an open car.

He opened his bedroom windows in the bitter cold, hoping he would catch pneumonia. When the germs failed, he put arsenic in John’s soup, in his tea, and in his eggnog. When that was too slow as well, he used chloroform and smothered him. Arthur’s accounts of exactly which germs he used and in what order changed every time he told the story.

What never changed was the result. Now the trial did something strange. The defense and the prosecution traded roles. Arthur’s lawyers needed the jury to see a man beyond all logic, so they worked to make his confessions look worse.

The prosecution needed the jury to see a calculating killer, so they tried to shrink the confessions into something plausible. The courtroom watched the two sides argue over which version of the monster to believe. Margaret Horton was the one who ended the argument. She did not volunteer.

A friend of hers, Dorothy Von Palmberg, told the district attorney about letters Arthur had written Margaret from Bellevue Hospital. The letters were damaging enough that Margaret had to testify against the man she had spent the winter with. On the stand, she described a letter Arthur wrote her from the hospital. In it, he said he did not expect to face the electric chair.

He expected to be sent to an asylum. He wrote that he would behave quietly. They would treat him well, and in time they would release him, and he would be free to meet her. It was not a letter from a man who could not stop himself.

It was a letter from a man with a plan. Margaret told the court she had loved him. She had told him she would wait forty years for him. She did not want to see him executed.

But her testimony did what the prosecution could not do for itself. The jury deliberated for one hour and twenty-five minutes. They convicted Arthur Warren Waite of first-degree murder. He was sentenced to death in the electric chair at Sing Sing prison.

Clara, the young woman with the blue eyes and the trembling voice, said she had lost everything. She endorsed the death sentence. She had lost her mother, her father, and her husband all within a few months. At Sing Sing, Arthur was calm.

The prison doctor thought about the arithmetic: a $50,000 gift reduced to $300 a month. A millionaire who wanted his daughter to live comfortably, and a son-in-law who wanted the entire fortune. Arthur had already tried to kill a wealthy aunt. He had asked his wife to write a will in his favor.

How far he intended to go, no one knows. What stopped him was not an investigator, a doctor, or even the law. It was a woman using a false name, a lunch at the Plaza Hotel, and a hunch that something was wrong. Arthur had planned everything—the cremation, the embalming fluid, the defense built on a soul from Egypt.

But he had not counted on someone who was simply paying attention.