Sam is arrested for murdering a woman, but Callen and Granger work to clear his name. Meanwhile, Kensi and Deeks discover a link between the victim and a student from Sam's past.
A Colonial house from Ichabod's era may hold they key to finding a missing person... and a secret from Ichabod's past.
As Marta learns the truth about Natalie's kidnapper, she also learns gripping new information about Evan's death. Gabriel decides to handle dangerous matters himeself while Kat and Ramos renew their forbidden relationship.
Against her family's wishes, Marta goes to Schiller for help when Natalie goes missing. Gabriel contemplates telling where Schiller's missing cocaine is hidden. Irwin consoles Felicity after Andrei mistreats her.
Marta's plan to flee the country with her children is ruined when Irwin, released early, decides to expand the business via a deal with Schiller. Irwin and Andrei's seething tension comes to a head. Mike robs his own home to pay off his debts.moreless
When stay-at-home Marta Walraven's marijuana exporting husband, Evan, is viciously killed in their driveway, her whole world changes. She has spent her whole life staying out of her father's organized crime world but things are about to change. With her primary concern being her children, she is reluctant to go against the "Bratva" (Russian mob) code when the FBI promises justice in exchange for her cooperation. As it turns out, Marta's brother, Irwin Petrov, and their best friend, Mike Tomlin, stole millions of dollars of cocaine from crime boss Nicholae Schiller. Even with Evan dead, the debt to Schiller is still not paid. Marta now has to figure how to find her way around the criminal underworld to repay this debt.moreless
Believing she'll be free from Schiller's control, Marta agrees to import a shipment for him in exchange for his stolen drugs. In order to accomplish her task successfully, she asks Mike and her father to teach her the criminal business, which means finding a customs official to pay off. Andrei's bodyguard keeps watch over Marta's family while Kat helping out at Marta's house causes problems with her new husband. Wanting to know more, Natalie asks FBI Agent Ramos if her father was involved in illegal activities.moreless
As Megan returns to work months after Peter's death, she is thrown together on a new case with a detective from her past. A serial killer is seeking out young war veterans but the case hits close to home for Megan when the killer takes Lacey hostage.moreless
In the second-to-last episode before the series finale, Chuck, Sarah, and Casey fight it out with Quinn on a bullet train. Back in Burbank, Lester and Jeff demand to know what's really going on.moreless
News anchor Griffin Page comes to Dani after he suddenly seems to be unable of doing his job without bursting into laughter. Meanwhile, an injury threatens to end TK's relationship with the Hawks.moreless
A dynamic restaurateur, finds herself mixed up in the murder investigation of a former contestant in a reality TV show called Kitchen Wars. The restaurateur is a high school friend of Beckett's and she shares an attraction to Castle. Meanwhile, Beckett's relationship with Demming continues to grow.moreless