This Magazine Is Haunted #3

In "The Cult of the 13 Ghosts," landlord Semple Ridgedon tries to erase the dark past of his building by tearing it down and rebuilding it anew—only to find that the evil spirits of a murdered cult refuse to be buried. As the ghosts reappear, they confront him with a chilling reminder of his own secret vow to join their ranks.

When a commission of alienists declares the ghost-breaker Jason Ellery insane, his lawyer and closest friend Giles Farrow begins investigating the truth behind Ellery's cryptic ravings about a sinister mirror dimension. His search leads him to an old house on Croom Street and an elderly couple, the Hallocks, who harbor a dark secret involving a pair of antique mirrors that trap their victims in a nightmarish glass world. Farrow soon finds himself forced between the fatal mirrors, pulled into the very trap that nearly destroyed Ellery—and discovers he's not alone in the darkness.

In "Quest Of The Vampire!" from This Magazine Is Haunted #3 (1952), famed psychic investigator Lawrence Avery is drawn into the eerie mysteries of the Buloff mansion, where strange events plague his friend Hans Buloff. With a chilling vampire bride and her unsettling butler guarding dark secrets, Avery must unravel the supernatural threat before it claims more.