Charlie and Sam are having a serious conversation that involves that ancient book. What do its pages reveal?

Looks like some research time for Charlie and Dean. Did Dean find something?

Dean does not look happy at all. Did Sam play a prank on him?

Dean reading? And it's not "Busty Asian Beauties"? This must be a serious situation.

Charlie is back! But does she bring good news or bad news for Sam and Dean?

Charlie may have found an important page in the book. Dean, however, doesn't look convinced.

This ain't no book club. Sam and Dean have got an ancient-looking book. But what is it for?

Sam, Dean and Charlie are chatting about a book. It's definitely not "Fifty Shades of Grey."

Sam and Rowena? Just what does he want with the witch? And what is that book in between them?

Sam's got a serious look on his face. But who is the red-haired woman he's talking to? Charlie?

Charlie tells Dean and Sam she has something that can remove the Mark of Cain on Supernatural. "Book of the Damned" is the 18th episode of the show's tenth season.

Those candle flames are rising high. This seance is definitely working for Sam and Castiel.