"Post Mortem" is the twentieth episode of the eighth season of House and the 175th overall.
The team takes on the case of Dr. Peter Treiber, a pathologist at Princeton-Plainsboro Teaching Hospital suddenly begins slicing his own scalp open during an autopsy.
Treiber knows too much about the hospital staff to trust any of the physicians, thus adding to the drama.
He buys a new car and convinces House, by threatening to drug him and take him along anyway, to go on an unannounced road trip with him.
House decides to take advantage of Wilson's condition to get some sympathy from the people they meet.