Mandy McMillian

Claire delicately helps Luke cope with the fact that his friend and their old neighbor, Walt, has passed. Phil takes Alex for some father-daughter bonding time, and Haley throws an unauthorized party. Meanwhile, Jay and Gloria go over to Mitch and Cam's to have dinner with Cam's father, Merle, who is in town visiting -- and awkwardness and tension seem to be the rule of the night.

Patrick investigates a double murder in Palm Springs that has all the hallmarks of a serial killer with a personal connection to Patrick.

Whilst investigating a construction site, Lightman and the team attempt to save three men trapped inside the wreckage of a collapsed building. Meanwhile, Ellie and Torres try to determine how legitimate a billionaire's lover is.

Burger-mad Marshall meets Regis Philbin while on a quest to find the restaurant where he had his very first New York burger.

The team hunts for a copycat serial killer who is recreating the techniques used by famous killers of the past.

After reading Pete's will, it is revealed that he wants all of his friends to have a party in his honour, so the doctors gather at Addison's home to reminisce.