Despite his recently revealed betrayals toward Olshansky, Marcellus manages to convince him to investigate why his only alibi is trying to make him look guilty of his informant's murder, in Part Two of a two-part first season finale of Hack.
Though Olshansky gets information that links Marcellus' alibi, Zeke, to Trepov - a gangster who boldly admits to Marcellus that he's framing him for the murder he, himself, committed - Zeke, who fears retribution from Trepov, refuses to tell the truth to Internal Affairs. Further complicating matters, Trepov has information on Marcellus that has long enabled him to blackmail him.
Meanwhile, as a jail sentence begins to seem very likely for Olshansky, he seriously contemplates implicating Marcellus for immunity. Also, Heather surprises Olshansky with the news of her engagement to Dr. Ambrose, and Olshansky's relationship with Faith is in jeopardy.
If you missed this episode, here is a complete summary of what happened in the final episode. (Spoilers!)