Are you ready to go back in time?
You should be, because Supernatural Season 10 Episode 19 spends an inordinate amount of time back in the 70s preparing the hour and it is super groovy and absolutely terrifying. Being a teenager back then was scary stuff.
Dean and Sam are on completely different pages and that could be due to the fact Sam's been reading the Book of the Damned with Rowena and Dean doesn't know about it. Making a deal with the devil is never a good bargain.
When it's discovered a former dude from the men of letters made a magical box that may hold the key to removing the Mark of Cain, Sam inadvertently sets the alarm Magnus left on it placing both brothers in grave danger.
Find out who and what will save them, if they can be saved at all, when you watch Supernatural online via TV Fanatic!
Carissa Pavlica is the managing editor and a staff writer for TV Fanatic. Follow her on Twitter.