Catherine Kamei

Mason Treadwell examines Emily's past; Kara's worsening state draws the attention of the Graysons.

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

Doctor Cyril Taft (Jon Cryer) 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 (Scottie Thompson) a visit as he chases a lead involving doctors in Sudan. Laura San Giacomo Guest Stars as Dr. Grace Confalone.

The CSIs investigate when a fire chief (a friend of Mac's) is killed in a blaze that used the same technique as a recently paroled arsonist, on the ninth season premiere of CSI: NY. Rob Morrow guest stars. (TV-14 L, V)

Zack is upset when Billie hires a baby nurse without consulting him. Meanwhile, Davis and Ryan are faced with a difficult choice when they learn surprising news about the nurse.