Insulin Attack on James Strickland and His Fatal Digoxin Poisoning

Charles Cullen’s attack on James Strickland at Somerset Medical Center unfolded in two stages: an insulin overdose that left Strickland gravely ill but alive, followed roughly two weeks later by a fatal dose of digoxin. The sequence shows how Cullen exploited routine nursing access, the ambiguity of a patient’s deteriorating condition, and gaps between medication records and what was actually administered. It also left Strickland’s family watching a medical emergency whose cause was hidden from them.

The decision and the first injection

Cullen had already decided to target Strickland, though he was not technically assigned to care for him. On a night shift, Strickland’s daughter, Janece, found Cullen in her father’s room and asked whether he was his nurse. Cullen avoided answering, moved down the hall, and waited until she had left. He later checked Strickland’s chart on a Cerner computer. The chart confirmed that Cullen was not the assigned nurse; it did not keep him from acting. Strickland remained within Cullen’s reach, and Cullen chose insulin.

Cullen waited through the night, checking Strickland’s chart and watching the ward. He took a 10 cc syringe from his scrubs and injected four ampoules of insulin into the port of Strickland’s IV. He discarded the syringe and ampoules in a sharps bin, then signed out and went home. He did not witness the consequences in person. Instead, he left with time to imagine the convulsions that his act would cause.

The setting helped make the intervention difficult to distinguish from legitimate care. In another episode at Saint Luke’s Hospital, Cullen had used an IV’s piggyback port, a routine access point nurses used to flush a line, to inject clear digoxin. At Saint Luke’s he also employed an indirect method: introducing drugs into IV bags while alone in the medication room and leaving the prepared bags among named patient trays. These were separate incidents, not actions against Strickland, but they show the practical logic of his methods: ordinary handling of lines and medicines could conceal a harmful intervention in plain sight.

A crisis without an apparent cause

The next morning, laboratory testing found no glucose in Strickland’s blood sample. Staff assumed the result was an error; a living person, they reasoned, could not have zero blood sugar. They did not recognize that Strickland had already been hypoglycemic for more than three hours. As his brain was deprived of sugar, his condition worsened.

Strickland’s teenage grandson first noticed a slight twitch in his arm. It began almost imperceptibly, then spread as Strickland’s glucose reserves were exhausted. The twitch became a full seizure. Alarms sounded, family members called for help, and experienced nurses saw a scene they found horrifying. Staff administered glucose throughout the day, but Strickland kept crashing. His grandson pointed at the expensive equipment and demanded to know what it was for. The machines and the intense response made the emergency visible; neither disclosed who had caused it.

Cullen returned to Strickland’s numbers on the Cerner system, revisiting the episode and its patterns. Strickland survived the insulin attack, at least physically, and remained at Somerset. That survival did not end the danger. It gave Cullen time to return to him while the first crisis could still be understood as a baffling medical event rather than an assault.

The fatal second stage

About two weeks later, Cullen finished what he had begun with a midnight dose of digoxin. Unlike the insulin attack, this administration left no corresponding trace in Strickland’s chart or in Cullen’s Pyxis requests. There were no canceled digoxin orders under his name either. The absence of those records was part of the concealment: the medication did not appear in the ordinary trail investigators or colleagues might consult.

The contrast between the two attacks is central to the event. Insulin produced a crisis whose symptoms intensified over hours and drew the family and nursing staff into a visible struggle to save Strickland. Digoxin completed the killing later, outside the recorded medication trail. Cullen’s apparent attention to the first episode’s data did not lead him to stop; he returned to the patient and used another drug. Strickland’s initial survival thus became an interval between assaults, not a reprieve from Cullen’s intention.

Opportunity, access, and concealment

The book places Strickland’s poisoning within a wider pattern of Cullen using the hospital’s routines to obtain access and avoid scrutiny. At Saint Luke’s, a suspicious medication shortage led staff to watch the medical storage room. Colleagues saw Cullen arrive early, rearrange chairs as he customarily did, and enter the locked room after punching in the access code. His helpful manner and familiar routine had made his movements seem ordinary to coworkers who liked and trusted him.

Amy Loughren later reconsidered another apparently helpful habit: Cullen often positioned himself near the hallway doors, where he could meet pharmacy runners and take their delivery tote. She had understood this as a way of saving the runner a trip and stocking the unit. In retrospect, she realized he could obtain drugs without touching the Pyxis system. That later recognition clarifies how medication access could evade one form of electronic tracking, although it does not establish that this was how he obtained the insulin or digoxin used against Strickland.

Night work, private patient rooms, and the routine movement of medicines offered opportunities for actions that could resemble ordinary nursing tasks. Cullen could check charts, handle IV lines, and dispose of used equipment as part of a shift; colleagues might see helpfulness where he was concealing an intervention. In Strickland’s case, the documented mismatch between the fatal digoxin dose and Cullen’s chart and Pyxis records makes that concealment especially stark.

Significance of the two-stage attack

The Strickland episode exposes the danger of treating a patient’s collapse as self-explanatory simply because it occurs in a hospital. A laboratory result was dismissed as impossible, the resulting seizures demanded urgent treatment, and the family saw a crisis without knowing its cause. Cullen could operate within that confusion because his actions were embedded in the same systems of care that staff relied on to help the patient.

The episode also distinguishes an attack from its apparent clinical aftermath. Strickland’s severe hypoglycemia and seizures were not the end of the story: he survived them, remained in the hospital, and was killed later by a different drug. The missing digoxin record marks the point at which the medical account fails to register the criminal act. What appeared to be a sequence of unstable symptoms and treatment was, in fact, a deliberate progression from insulin poisoning to fatal digoxin poisoning.