Ian Reed Kesler

Sheldon and Leonard hire Professor Proton (guest star BOB NEWHART), the host of their favorite childhood TV show, to perform. Also, Howard and Bernadette run into trouble babysitting Raj's dog.

A handsome businessman, Owen (guest star Ian Reed Kesler – Mom, Weeds), returns Max and Caroline's missing cat, Nancy, who comes home with a big surprise.

Christy's evening alone takes an unexpected turn when she meets her attractive, single neighbor, Andy (guest star Colin Hanks). Also, Bonnie and Alvin's romantic plans are derailed by Alvin's ex-wife, Lorraine (guest star Beverly D'Angelo).

A dismembered body is found in multiple boxes donated to a thrift store; Langston's wife visits the crime lab.

The life of a transplant patient hangs in the balance as the team tries to find the hijacked plane carrying the liver.

The team investigates the death of a professor, who was found hanging from a tree after being tortured.