Todd Giebenhain

Leonard is pleasantly surprised when his mother, Beverly, comes to visit and she’s genuinely kind toward him – until he finds out the real reason why she’s there; Meanwhile, Denise and Stuart overstay their welcome at the Wolowitz house.

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.

At college, Sheldon decides to expand his responsibilities and become a dorm resident adviser; Meemaw and Dale make a sketchy business deal; Mary and George Sr. rekindle their romance.

When the team discovers a connection between a new murder and a serial killer, Grissom secretly joins the class of a criminal pathologist (Laurence Fishburne) to help crack the case.

Grissom and Catherine investigate the stabbing death of a moviegoer; the team comes to a forensic impasse while processing a teenager who died from a gunshot wound.