Kathe E. Mazur

The team are called to Arizona to investigate a series of codes left by a suspect following two brutal murders.

Cristina and Preston have philosophical differences over a young boy who needs a heart transplant; the interns help Alex prepare for his exam re-sit; Meredith reminds Izzie about the true meaning of Christmas.

The murder of a petty officer sparks a lead in a 40-year-old airport bombing cold case that Gibbs and DiNozzo have been assigned to for the past two years. Also, McGee is jealous that he was not previously briefed on the cold case.

Lisbon takes another look at the murky world of billionaire businessman Tommy Volker, as well as helping Jane to catch the killer of an up-and-coming model.

Frasier vows revenge after Bulldog plays a prank on him, and Daphne's mum wages war against a scorned trick-or-treater in a practical joke grudge match.

Major Crimes suffers from growing pains as the division seeks justice in the wake of a brutal homicide. The departmental changes go a little too far for Provenza, while Raydor struggles to gain respect from colleagues.