: Tess attempts to use Detective Espada to get back at her unfaithful husband. Meanwhile, internal tensions rise as members of Internal Affairs begin surveilling Wozniak’s crew in an attempt to identify the "rat" in their unit.

: Harlee discovers that her daughter, Cristina, has been secretly dating a boy named Manny. Additionally, Harlee finds a prison letter addressed to Cristina from her biological father, Miguel Zepeda, which Harlee had been hiding for years.

: Harlee grows increasingly suspicious of her FBI handler, Robert Stahl (Warren Kole), fearing his interest in her has become a personal obsession. She enlists an old friend and former training officer, Caddie, to plant secret cameras in Stahl’s apartment, where she discovers he has been stalking her.