Plot summary
John Tagman ( Neil Patrick Harris ) is a lonely, quiet, unassuming guy who kidnaps and attempts to lobotomize two young women, one of whom dies and the other suffers permanent brain damage. Goren and Eames, track him down but have difficulty finding the evidence to convict him. A.D.A. Ron Carver and Captain James Deakins seek the death penalty however Goren surprisingly opposes them, protesting that Tagman did not have the intent to kill, but to create a submissive companion. In the police interview room, Goren successfully elicits a confession from Tagman which results in a life sentence, although he is later beaten to death in prison.
Credits
Adapted from Wikipedia contributors, Law & Order: Criminal Intent season 4. HTML formatting and reference markers removed.