Cullen Injects Digoxin into Helen Dean

On September 1, 1993, Charles Cullen injected Helen Dean with digoxin at Warren Hospital, killing an elderly patient who was recovering from breast cancer surgery. The act was concealed within ordinary nursing access: Cullen entered her room as a nurse, sent her son away, and left behind only a tiny puncture mark. Her son, Larry Dean, noticed that something was wrong and pursued the case, but the investigation failed to test for the poison that would have explained her death.

Selection and Preparation

Cullen had been visiting the intensive care unit and narrowing his attention toward a patient, though he had not yet settled on what he would do. Helen Dean was due to leave the hospital the next day. She was recovering well from breast cancer surgery, and her adult son, Larry, seemed never to leave her bedside. The narrative identifies that constant presence as the detail that forced Cullen’s decision, without explaining why it mattered to him.

The drug was available in small glass ampules in the hospital drug closet, stored in a plastic drawer called a cassette. Digoxin was a familiar intensive-care medication: nurses called it “didge,” and charts often shortened its name to “dig.” Used to slow the firing mechanism of heart muscle, it could be obtained through the same routine medical supply system that made it an ordinary part of care. Cullen loaded three ampules and calculated that the total, one and a half milligrams, might be enough if given intramuscularly. He palmed the syringe and entered Helen’s room.

The Injection and Its Witness

Larry later remembered the visit as immediately unusual. He had been at his mother’s bedside every day and knew the nurses at least by sight; a male nurse was especially likely to stand out. He had never seen this one before. More striking, the man was dressed entirely in white, while the other nurses Larry had seen at Warren Hospital wore blue.

The nurse told Larry to leave the room, without meeting his eyes or changing his expression. Larry went down the hall for coffee. When he returned about ten minutes later, his mother was alone and angry. She told him that the nurse had stuck her. Raising her hospital gown, she pointed to her inner thigh. Larry used the small magnifying lens on his Swiss Army knife to examine the spot and saw a pinprick. He called the doctor.

The doctor suggested that it might be a bug bite. By the following day, however, Helen was violently ill, sweating and exhausted. Her heart stopped, and resuscitation failed. The puncture mark had been a small, visible trace of an encounter that Cullen had tried to pass off as legitimate access to a patient; its meaning was not yet established by the hospital’s response.

The Investigation and the Missed Test

Larry took it upon himself to find out what had happened. He complained to his mother’s oncologist, who confirmed that Helen had not been scheduled to receive an injection. He also questioned her other nurses. They identified the male nurse she had described as Charles Cullen. Larry then called the Warren County Prosecutor’s Office, told them that his mother had been murdered, and named Cullen as the person responsible.

Cullen went home after the injection and assumed that this time the hospital would work out what had happened. He wondered whether that depended on Helen dying. He returned to work the next day and learned that she had died. He was questioned in a series of meetings by a doctor, Warren Hospital administrators, nurse supervisors, and two investigators from the Major Crime Investigation Unit of the Warren County Prosecutor’s Office. Each asked him to recount the events aloud. Cullen denied everything, including giving Helen an injection, while his locker was searched.

Helen’s body was taken into cold storage and later thawed so that a doctor from the Medical Examiner’s Office could sample the tiny mark on her thigh. The examiner planned to test for nearly one hundred potentially lethal chemicals, but did not test for digoxin. Helen’s death was therefore classified as natural causes. The physical clue and Larry’s account had prompted scrutiny, yet the crucial toxicological test that could have connected the injection to the drug was omitted.

Leave and Immediate Aftermath

Cullen’s supervisor placed him on indefinite paid leave, effective immediately. At first, being paid not to work did not sound like a hardship. At home in his basement apartment, however, he sat for hours moving between the couch, the kitchen table, and the bed, depressed and wondering whether the authorities would come for him. He also considered whether he should arrange to become a tragic suicide in jail, as he had after breaking into Michelle Tomlinson’s apartment. The account ends this immediate aftermath with an ambulance arriving just before eleven at night; this time, Cullen left the door unlocked for the responders.

The episode turned an apparently minor puncture into a direct accusation by a bereaved son, then into a formal investigation that still failed to establish the cause of death. Cullen’s routine access to medication and patients made the act difficult to distinguish from ordinary care; the missed digoxin test ensured that Helen Dean’s death was officially left without the explanation Larry had sought.