Grace Travis is a loving wife and mother and one of the bay area's best undercover detectives. She's been on loan with the Oakland Police Department for the past year working undercover as a fixer in Jimmy Laszlo's criminal organization. After her son, Sam, is killed in an apparent drive-by, Grace's life is shattered.

Jimmy Laszlo has discovered Grace's true identity. While pleading for her life, Grace convinces Jimmy that there’s a traitor in his own organization, and it’s tied to her son's death. Jimmy investigates Grace’s claims and confirms she's telling the truth about Sam. Jimmy discovers millions are missing from his accounts. Uncertain about his crew, Jimmy tightens ship.

The Laszlos feel the fallout from Alec's retaliation against Clay Street. The Chinese want blood or money, and the police want justice. Grace convinces Jimmy to take pre-emptive action by walking into the police station on his own volition and denying his family’s involvement. Grace uses this distraction to steal cell phones from his crew and asks Mitch to run for location and call histories.

Jimmy reprimands Alec for killing the two crew members. If he ever wants JImmy's seat, he's going to have think through his actions more carefully. Grace questions Jimmy about the killing, he admits Alec was behind it.

Jimmy and Grace go through Charlie's papers searching for a lead. Grace asks Mitch to run the serial numbers on money they find in Charlie’s home. He discovers a link to a treasure agent, Michael Chen, who committed suicide five months earlier. Grace remembers she was supposed to meet with Chen around the time of his death – he never showed up.

Grace tells Tom he and Evie need to stay someplace else for a couple days. Although Grace won't tell him why, Tom suspects something is wrong. Tom decides to take Evie to stay at Shelley's place.