Malcolm Foster Smith

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.

Howard is nervous when NASA asks him to throw out the first pitch at a Los Angeles Angels game for National Space Day. Also, Leonard and Penny try to prove Sheldon wrong after he claims that he and Amy are a superior couple.

A sadistic serial killer kidnaps and tortures Reid and broadcasts the ordeal over the Internet.

Mike discovers a dinosaur bone in the quarry at work; Brick decides to run for school historian.

Frankie tries to stop her kids from fighting with one another; Mike considers firing Aunt Edie when she makes a costly mistake.

Jax brings a new proposal to the club with serious consequences.