What's the name of that film again ...
...from the early 90's and starring Scott Glenn, where the protagonist is a young recruit whose dad was killed in the line of duty, is looking to discover the identity of a serial killer and gets into a quid pro quo relationship with an incarcerated dangerous psychopath who trades his insights into the killer's psyche against details of the protagonist's childhood related to the death of their father?
Oh yeah; it's Backdraft !