Kate Skinner

Frank mobilizes the entire NYPD to find the killer of an off-duty police officer who was murdered during a diamond heist.

A young boy is found smothered in the baggage compartment of an airport bus. Detectives Stabler (Christopher Meloni) and Benson (Mariska Hargitay) track down the bus' origin and via the tape in the parking lot see the young boy sneaking on the bus with an older boy. They find the older boy, Ernesto (Pablo Santos), at the airport trying to sneak on a plane. Ernesto is devastated to learn that his "brother" Jose, who he was helping to escape their abusive adopted father, is dead. Their "father" is Bret Jansen, a wealthy attorney who raped, tortured and abused them in his luxury apartment. The detectives go to Bret's apartment and find him castrated and dead, lying in a pool of blood. Bret and his two squash buddies, it turns out, were procuring young boys from Central America and using them as slaves. The detectives establish that Ernesto did not kill Bret so the investigation shifts to Bret's pals, Anthony Damon (Will Arnett), a travel agent, and Dr. Stewart Lynch (Patrick Cassidy), a plastic surgeon.

The police break up a dog-fighting ring, and discover a woman's finger inside one of the dead animals. The finger is identified as belonging to Lauren Vance, soon-to-be ex-wife of Marty Vance (guest star Adam Rothenberg), after her body turns up near a dog breeder. Since Lauren and her husband were in the process of divorce proceedings, Detectives Ed Green (Jesse L. Martin) and Cyrus Lupo (Jeremy Sisto) initially suspect Marty as the brutal murderer. Marty was involved in the dog-fighting ring with friend and business partner Jay Carlin (guest star David Harbour), an extremely wealthy wine dealer. As the investigation unfolds, the detectives plot to trick an ambitious reporter, Dawn Talley (guest star Lara Flynn Boyle), who uses her sexuality to try to break the case. Turns out Jay's business is a scam, which leads prosecutors Michael Cutter (Linus Roache) and Connie Rubirosa (Alana De La Garza) to a new suspect. Also starring: Sam Waterston and S. Epatha Merkerson.

Goren searches for evidence that a pompous doctor is relieving his elderly patients of their heirloom jewelry just before they suffer deadly strokes.

A young violinist is pushed to her death at the opera house, and Logan and Barek focus on the arrogant conductor until they receive jarring medical news that changes everything.