Helen Eigenberg

The team searches for a serial killer who is preying on married couples; Hotchner looks to a team member to fill JJ's vacant role.

Derek and April fight to find a solution for the hospital; Cristina works to respect the wishes of a dying boy's family; Arizona identifies with a teenager who is facing similar problems.

Rachel attends a job interview at the same restaurant her current boss is also dining at.

The commander in charge of a shipment of nuclear weapons seems to have been abducted, and Gibbs and his team work quickly to find her and protect the classified location of the armaments.

Callen, Hanna, Danny Williams (Scott Caan) and Chin Ho Kelly (Daniel Dae Kim) travel from Hawaii to Los Angeles in pursuit of a suspect harboring a deadly virus.

Evidence suggests that the man responsible for saving a lieutenant's life is a soldier who was captured in Afghanistan.