Supernatural Season 4 Episode 18
The Monster at the End of this Book
Familiar plot. Familiar characters. Sam and Dean come across a series of graphic novels called "Supernatural" featuring two demon-hunting brothers named Sam and Dean.
Guest Stars
Misha Collins
Castiel
Katherine Boecher
Lilith
Keegan Connor Tracy
Sera Siege
Michael P. Northey
Comic Book Store Owner
Mike Klemak
Cop