Nick McCallum

Max and Caroline's partnership is almost torn apart when Caroline drags Max to a seminar that she hopes will teach them to brand their cupcake business more effectively. Sophie and Oleg contemplate getting matching tattoos.

When a pool shark is murdered by an unseen force, Castle and Becket uncover evidence that the killer may have paranormal powers.

When Wesley recognises the hallmarks of Angelus' 18th-century killing spree, Angel wonders if he is slaughtering people in his sleep.

The doctors treat a drug-abusing punk rocker who displays an alarming range of symptoms. Cuddy pressures House to decide who will make the line-up of his new team, and Wilson is confronted with an unusual lawsuit.

On the floor of the New York Mercantile Exchange, panic ensues when a mysterious briefcase is found and the traders rush for the exits. Mac investigates and links the briefcase to a stockbroker, but when Mac and Aidan head to his apartment, he has vanished. Has the broker gone from suspect to victim?

Susie, Chris and the love of his life, seek help from Chris's retired mentor.