John Apicella

Sheldon's latest scientific breakthrough leaves him feeling like a fraud and a romantic gesture between Howard and Bernadette causes Penny to up her game with Leonard.

Chandler plans to propose to Monica at dinner but his plans go awry when Richard shows up. Phoebe and Joey join Rachel at a charity auction.

Scully and Mulder meet a delusional man who is convinced his boss is a monster and is willing to prove it.

Brennan and Booth investigate a set of uniquely disfigured remains allegorizing biblical text. As they acquire more information about the victim, a former patient of Dr. Adam Copeland (guest star Joshua Malina) at Havenhurst Sanitarium, they are confronted with suspects who are hard to characterize as either good or evil. Meanwhile, Jeffersonian intern Arastoo Vaziri (guest star Pej Vahdat) reveals a secret about his past.

Nora goes on a last-minute getaway with Karl to escape the holidays. Meanwhile, Saul has a chance encounter with a past love.

Sipowicz and Simone search for a killer on the run; Lt. Fancy intercedes with his police-officer brother and a white commander.