Former nurse says depression drove him to murder patients
Former nurse Charles Cullen says depression and guilt drove him to murder dozens of his patients.
Cullen admitted to investigators last year to killing as many as 40 patients over 16 years at hospitals in New Jersey and Pennsylvania. He pleaded guilty to more than a dozen of those murders last April.
In interviews, Cullen told investigators he wanted to end a patient's suffering. Cullen says each killing coincided with a bout of depression. He also said he attempted suicide several times.
The former nurse admits he wanted to quit nursing, but says didn't know what else to do for a living.