Michael Dempsey

When Leonard and Sheldon are invited to speak at UC Berkeley, they take a detour to try to sneak on to George Lucas's Skywalker Ranch to meet one of their idols. Back in Pasadena, Howard and Bernadette battle over the fate of his Dr. Who Tardis, while Raj and Amy offer to settle the dispute with a game of ping pong.

When a man is found murdered inside his supposedly impenetrable doomsday fallout shelter, the squad must figure out how and why he was targeted. Jane finds it difficult to focus on the case when she discovers Korsak is looking into retirement and Frankie is keeping a secret of his own.

After their home is robbed at Christmastime, Christy and Bonnie's search for the thief leads to an unlikely door.

After a heavy rain, the CSI team is called to investigate the deaths of two people found in sewage drains to determine whether either was murder.