Sam learns that former Men of Letters, Magnus, once built a magical box and Sam sets out to find it in the hopes it can cure Dean of the Mark of Cain. However, what he's not prepared for is the deadly alarm system Magnus set up on the box. When Sam opens the box, he puts both his and Dean's life in danger.
About Supernatural series:
Supernatural is a US drama-horror/supernatural television series that follows the life of the Winchester brothers, Sam and Dean as they continue th...Show more >