Hawaii Five O - Season 1, Episode 8: Mana'o

Danny's ex- partner turns up dead and he personnally takes it upon himself to find who murdered him. They later find out that the murder investigation is being handled by Internal Affairs. Danny (Scott Caan) emotionally involved is pissed that the investigation is leading them into the fact that his ex-partner might be a dirty cop.

Channel: CBS
Air Date: 8 November 2010