John Apicella

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.

Sheldon's latest scientific breakthrough makes him feel like a fraud – and threatens to haunt him forever. Meanwhile, Howard's romantic gesture to Bernadette causes Penny to step 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.

Nora takes a last-minute getaway with Karl; Saul has an encounter with a past love.

Nora and Kitty make unexpected romantic connections; Kevin's nerves get the better of him; Sarah's plans for a last romantic night with Luc do not go as planned.