Published Sep 1969 by DC.
interior scuffs on slab
Cover by Neal Adams. Featuring: 11 page story "The Devil's Doorway" written by Jack Oleck and drawn by Alex Toth; 3 page Cain's True Case Files story "Grave Results!" written by Marv Wolfman and drawn by Wayne Howard; 1 page Cain promo by Joe Orlando (promo for House of Secrets); Half page Cain's Game Room filler by Sergio Aragones; 8 page House of Mystery story "The Hound of Night!" written by Robert Kanigher and drawn by Jerry Grandenetti.