In the Season 3 premiere, Grace is still missing; Ethan heads to Chicago to investigate a notorious attorney; and DEA Agent Harper Deakins' investigation of a Chicago gang takes a bad turn when a routine stakeout goes wrong.
Grace works to escape; Ethan reconnects with his father; gang warfare spills into the suburbs; and Ethan investigates Marty's leak at a party, where he meets Marlon Dinard, who is not what he seems.
Grace heads to Chicago to work with Ethan; Marlon appears on Harper's DEA radar; Harper's confidential informant, Lobo, is made; and Ethan finds Marty's leak.
Harper is hit hard by Lobo's death; Ethan tells Marty the real reason he's in Chicago; Talia causes problems for Marlon; Grace and Ethan spy on Marty and the General; and Grace follows a dangerous lead.
Talia is arrested, which causes a headache for Marty; Harper uncovers another clue in Hutchings' death; and Ethan searches for Grace and tries to rescue his father before it's too late.
Ethan and George work on their relationship while hiding from Roberts; Marlon strives to regain control following Cups' death; Talia tries a fresh start; and Harper follows the money trail, which leads her to Marlon.
Patrick investigates who shot at Harper, whose efforts to nail Marlon lead her to try and flip Talia. Ethan, meanwhile, turns himself in.
Ethan rots in prison. Roberts is arrested. Marty and the General have a sparring match over dinner. Harper leaves Jack and stays with Patrick, leading her to a few revelations. Talia plans her next move after a fight with Marlon.
Marlon's business is in jeopardy and Marty refuses to help. Harper questions Patrick. A free man, Ethan needs to decide what's next. Talia sets up Marlon. Marty learns of the sting and rushes to stop Marlon before it's too late.
Harper keeps Patrick contained. Marlon is arrested for Talia's murder, with Marty coming to his defense. Ethan strikes a new deal with Marty, who learns Marlon betrayed him. Harper breaks the Hutchings' murder case wide open.
Ethan looks for a missing woman, but soon realizes she's in hiding from someone who's trying to kill her. Harper tries using the recording of Talia's death to turn Marlon. Marty plots Marlon's prison release.
Ethan continues to look for Mia. Constantly outsmarted by Marty in her investigation, Harper contemplates going rogue. Marty works to get the warrant for his DNA thrown out. Marlon seeks revenge against Marty.
Ethan contemplates if he can trust Mia while dealing with an unexpected gunman. Marty does damage control after the audio tape of Talia's death is released. Harper tries to hide her involvement in leaking the tape.
Ethan and Mia learn the identity of the assassin. Marlon considers starting over and forgoing illegal activity. Marty fights the court of public opinion regarding Talia's death. Harper harasses Marty's clients for dirt on him.
Ethan learns the Russian mob was contracted to kill Mia. He works to discover who ordered the hit. Harper convinces Patrick to help her secretly investigate Greg Barrett's murder. Marlon tries to get his assets back.
Ethan questions why Marty wants Mia dead; Jen is kidnapped; Harper searches for Patrick, who's missing; and Marlon lies to Zipporah while continuing to help Ethan.
Harper and Lowry question Russian mobsters about Mia's whereabouts; Ethan and Jen look into Mia's kidnapping on their own; and Marlon tries to hide his bullet wound from Zipporah.
Ethan turns the tables on Tilda after learning of her plan to kill him; Marty forces Mia to use the flash drive; and Harper copes with the aftermath of the task force being shot up.
Ethan, Marty, and Mia try to procure money for the Russian mob; Harper and Patrick find Tilda's body and Marty; and Marlon fights for his relationship with Zipporah.
Harper learns Mia's true identity; Ethan has to decide whether he trusts Mia or Marty while the three pull a heist together; and Marlon turns his back on gang life.
