Catherine Kamei

Things get complicated as Mason Treadwell delves further into Emily's past while Kara begins to unravel, putting the Graysons in her crosshairs.

Doctor Cyril Taft experiences the rush of an NCIS case after he is assigned surgical duty to Gibb's suspect and finds key evidence. Also, DiNozzo pays Jeanne Benoit a visit as he chases a lead involving doctors in Sudan.

The team must help an injured former Secret Service agent regain his memory in order to stop the launching of weapons of mass destruction.

A recently paroled arsonist (Rob Morrow) comes under suspicion when a blaze employing his past technique kills a fire chief.

The optimism of a young leukaemia patient inspires James to become a better person. James confesses his feelings for Zoe, while Julianna's Christmas visit with Walter reveals the strain of their long-distance marriage.

Zack gets upset when Billie hires a baby nurse to help them without his knowledge. Meanwhile, Davis and Ryan are put in a difficult position when they know something about the nurse.