An undercover cop whose son was killed returns to work against the orders of her superiors in the series opener.
Grace is revealed as a cop, but Jimmy decides to keep working with her after he is double-crossed.
A firebombing poses problems for Jimmy; Grace and Mitch team up to investigate Jimmy's crew; Max and the Chinese deliberate; Alec strives to win back Jimmy's trust.
Sam's death is linked to Jimmy's crew; Jimmy delivers a scolding to Alec; Capt. Campbell seeks dirt on Jimmy; Max receives word of the missing money.
Grace traces the money from Charlie's safe with the help of a friend on the force; Alec learns of Max's plans to take over Charlie's business; Shelley comforts Tom; Grace encounters a masked gunman.
Grace learns about the missing money from Jimmy before investigating the abandoned shooting range; Grace sends Tom and Evie packing; Grace gets into Santa Rita with Mitch's help.
Mitch issues a warning to Grace about confiding in Jimmy; Max reveals Grace's true identity to Alec; Grace and Mitch venture to the parking lot where she planned to rendezvous with Michael Chen.
Grace meets the internal-affairs review board; Jimmy suspects that his son is dead; a gun has Grace's fingerprints on it.
Jimmy seeks reconciliation with Alec; Alec makes a grab for power; Mitch investigates Sam's death; Grace goes into general holding.
Grace suffers a beating that leaves her hospitalized; Alec plots to seize the family business.
