Marcos De La Cruz

Jane suspects that FBI Agent Susan Darcy has ulterior motives when she asks for his help with a homicide investigation. Meanwhile, the CBI team handles the murder of a young woman who was killed after meeting someone in an online chat room.

When people are killed by arsenic poisoning and handwritten death threats are found, the team pursues a suspect fascinated by Greek mythology; Hotch is worried about participating in a Career Day at Jack's school.

With ATF agent Stahl pressing the women of SAMCRO, Jax sees Chief Unser as the key to the club's salvation. Tara still reels from the Kohn situation. And Cherry reveals some interesting information about her past to Gemma.

Both the ATF and the Russians prove obstacles as the club looks to heal old wounds.

The entire SAMCRO family goes on lockdown inside the clubhouse as Jax and Clay prepare to battle The League. A.J. Weston learns the truth about Ethan Zobelle's business dealings in Charming. Applying what she has learned from Gemma, Tara ensures her position at St. Thomas Hospital.

Emily decides to bring Victoria's skeletons out of the closet during the Graysons' masquerade ball; Jack finds a surprising ally to help with his revenge plan; Aiden's actions yield gruesome results.