Kathe E. Mazur

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.

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.

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

Addison flirts with a colleague at St Ambrose Hospital; Sheldon and Pete try to convince Violet to take a paternity test; Sam accidentally calls Sonya by the wrong name.

Castle and Beckett are investigating the murder of a Russian diplomat's son; Castle is required to entertain a Russian security guard whose involvement in the case runs deeper than anticipated.

The team discover a disturbing family secret while trying to find a bone marrow match for an ailing teen; House tries to remove his ankle monitor so he can go to a boxing match; Taub's ex-wife wants to move across the country with their daughter.