Morgan Hewitt

Leonard tries to keep Sheldon from overreacting when a past mistake comes to light, but Sheldon punishes Leonard by making him “walk a mile in his shoes.” Meanwhile, Penny confronts Raj's ex-girlfriend, Lucy (guest star KATE MICUCCI).

Vince gets a taste of the fashion world when he agrees to do a Dolce & Gabbana photo shoot with a gorgeous supermodel. Ari pays his respects, while he tries to work a deal for Vince at a funeral.

Emily targets an author with ties to the Graysons and the Clarkes; Conrad shows how dirty he is willing to get in the divorce; Jack lets his guard down with Amanda; a shocking revelation becomes a game changer.

Melanie's boss puts her in an awkward position with her attractive co-worker, while Joy is self-conscious about fitting in at college. Meanwhile, Victoria's director asks her to change her appearance, and Elka keeps a secret.

The CSIs appear to have an open and shut case after a murder suspect is impaled during a police pursuit, but it turns out the investigation is just beginning. (TV-14)