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.

An aspiring singer (Ace Young) is murdered and, as Brennan and Booth investigate the musician's fans and foes, one obsessed woman transfers her affections to Booth.

A NASA scientist asks Walter for help finding a woman he met at a bar, using the red stiletto she left behind as the first clue; Willa exposes Leo's family secret.

As Raylan (Timothy Olyphant) races against time to find a severely injured man who’s suspected of being a missing drug courier, Ava (Joelle Carter) and Boyd’s (Walton Goggins) search leads them to an upscale Harlan neighborhood’s underground sex party.

As Boyd (Walton Goggins) uses the Detroit mob’s contract on Drew Thompson to target his own enemies, Raylan’s (Timothy Olyphant) search for the missing drug courier leads him to question Harlan’s imprisoned former sheriff.

The gang's high school reunion has come at last; each of them recalls the events that shaped them into the people they are now.