Meredith and Lexie's father returns to Seattle Grace with stomach pains and a new girlfriend; Alex butts heads with the new OB; Mark bribes Jackson for information on Lexie.
House and co-join forces with a search-and-rescue team to help at the scene of an emergency, and a mystery emerges.
A group of Los Angeles police officers and detectives respond to a gangland shootout, while two homicide detectives frantically search for a missing
When an unidentified female body turns up in an alley, Gang Detectives Sammy and Nate have their work cut out for them
