The investigation of a murdered police officer gets some help from a behavioral analyst. Meanwhile, Cam faces some difficult decisions in her personal life.
When a former Marine turned homeless is murdered, Kensi and Deeks go undercover for the investigation and find a link to the Mexican cartel.
A bomb strike threatens the Internet infrastructure for the entire Southwest. Meanwhile, Team Scorpion fails a military training operation and becomes determined to prove themselves.
The Fosters come together for a special celebration. Stef's and Lena's parents get involved with the wedding planning. Callie has to make a decision about taking justice against Liam. She and Jude receive hopeful news.moreless
Feelings of anger and betrayal boil over and Jesus and Mariana get into a fight. Lexi makes a drastic decision after her parents try to keep her from Jesus. Callie turns to Brandon for comfort in opening up about her past, and Jude tries to impress a friend.moreless
Lexi's religious parents are invited to dinner at the Fosters', but Stef and Lena worry that they will impose their views on Jesus. Stef's father also pays a visit and complicates the situation. Callie meets someone at a group therapy session, and she learns more about Wyatt.moreless
The hospital's popular flower delivery man collapses, and Emily sets out to diagnose his condition. However, she is confused by his refusal to accept treatment. Will and Emily are assigned to a help an ailing criminal, but they struggle to maintain their professionalism and not be influenced by the crimes that he has committed. Meanwhile, Dr. Dupre continues mend his relationship with Tyra, but Emily once again finds herself in the middle when Dr. Dupre and Tyra hit a rough patch and he turns to Emily for help.moreless
While the jury deliberates, Jane tries to prove a woman charged with murder is innocent. While helping Cho with a case, Summer may have gone too far.
Horatio finds out something interesting about the person thought to have killed the husband of the police chief from Mexico. Horatio get some interesting clues as to who the real killer may be.moreless
The Connors face an attack on two fronts in the wake of the Jeep explosion, one of them from an unexpected source that sends them on the run. Cameron and John face choices, and John realizes that maybe he is destined to be alone. Meanwhile, after Cromartie's massacre, Agent Ellison must face off against both the Feds and his faith.moreless