Samantha Quan

The CBI team delves into the surprisingly cutthroat world of academics in a case involving a graduate student at a natural history museum. Supernatural’s ROB BENEDICT guest stars as adjunct professor Paul Friedman, while Homeland’s ZULEIKHA ROBINSON guest stars as Dr. Sonia Kidd, a scientist at the university.

Sandy tries to make amends with Kirsten for keeping Rebecca's (recurring guest star KIM DELANEY) return a secret by showering his wife with Valentine's Day gifts. Zach (recurring guest star MICHAEL CASSIDY), Summer and Seth drive to San Diego to pitch their comic book idea, and Seth is determined to use the trip to get Summer back. Julie returns from her European vacation and has decided to reconnect with Marissa. Meanwhile, Ryan wants to spend Valentine's Day with Lindsay (recurring guest star SHANNON LUCIO), but her loyalty to Caleb gets in the way.

After receiving word that his father has passed away, House is coerced into attending the funeral; the team tries to diagnose the illness of a woman who was in China searching for her birth mother.

Days before his scheduled execution, a man Jeffries arrested in 1994 begs him to re-examine the case.