Hindsight, Part 3 (S04E21)

After finding another victim, Sharon angrily turns her attention back to former LAPD detective Mark Hickman (recurring guest star Jason Gedrick), given his habit of appearing in the wrong place at the wrong time, as well as the secret he has that may be a motive for murder for him or his wife. The possible gang war ratchets up a notch with three more murders. Fritz (recurring guest star Jon Tenney) and his team help the LAPD show up in force at a funeral, where Tao makes an interesting discovery involving Peter Goldman (recurring guest star Curtis Armstrong), the notorious lawyer who has dedicated his life to attacking the LAPD. (iTunes)