Nikki McCauley

Gibbs and McGee head to Alaska while the team work at home to uncover the conspiracy behind the serial killer.

A Department of Justice agent requests Sam's assistance as he searches for a former US Border Patrol tactical officer who went missing following a threat by the cartel.

Dave's fling begins turning into a relationship he doesn't want; Jane tries to help Alex find a roommate.

When a body goes missing from the morgue, Melissa needs help from Professor Payne.

Tim Foyle is caught breaking into Mars Investigations. After questioning Mindy O'Dell, Keith makes an arrest related to the dean's death. Wallace spies Logan and Parker eating lunch.

When one of Lola's former murder cases is overturned on appeal, Mark helms the retrial and struggles to keep the bomber in jail. Lola fears she may have prosecuted an innocent man.