Leith Burke

The BAU profiles a serial killer who takes families hostage and lives with them as a father figure during what is supposed to be their family vacations.

SSA David Rossi's personal and professional life is brought to the forefront when the BAU is called to investigate a case in Commack, Long Island, Agent Rossi's hometown.

Owen puts the residents through a rigorous trauma certification drill; Cristina is left alone to monitor an ill lung transplant patient.

Richard's 10,000th surgery is a liver transplant for two sisters; Derek and Lexie take on a case that had been declared inoperable; Teddy and Cristina try to swipe a case from Alex and Dr. McQueen; Meredith tries to choose a specialty.

The NCIS team partners up with the Coast Guard Investigative Service when they have to investigate the murder of a marine on a dinner boat cruise.

The tables are turned when a cyber bully targets Sofia, leading Mickey to come up with a plan for revenge. Meanwhile, Jimmy teaches Chip and Ben how to be self-sufficient, resulting in a painful disaster.