John Prosky

After a doctor is found dead at a golf course, the CBI team searches for a killer amongst a hospital's staff and patients. Meanwhile, when LaRoche is placed in charge of the CBI, his first act of business is to name Cho the new team leader.

Izzie seems to be getting over Alex when she shares an undeniable chemistry with Denny Duquette, a patient who's awaiting a heart transplant, and George treats Bex, a young teen hermaphrodite.

Megan and Tommy investigate the savage murder of a young woman, which leads them to her neighbour, who bites Tommy and is diagnosed with rabies.

Holly takes her authority at Ojai Foods too far and pushes Saul and Sarah to their limits. Meanwhile, Kevin encounters homophobia in the work place for the first time.

Emily learns the identity of a key conspirator against her father, and Victoria sets a trap for Emily.

When a body is discovered in Atlanta covered in scratches, the BAU finds that this death and subsequent murders could be linked to an UnSub with an obsessive skin disorder.