![DC Universe on X: "Step into a world of secrets and mysteries. Enter for a chance to win these Bronze Age collections of SWAMP THING, HOUSE OF SECRETS, and HOUSE OF MYSTERIES. DC Universe on X: "Step into a world of secrets and mysteries. Enter for a chance to win these Bronze Age collections of SWAMP THING, HOUSE OF SECRETS, and HOUSE OF MYSTERIES.](https://pbs.twimg.com/media/EA_hOjIU8AAwT3U.png)
DC Universe on X: "Step into a world of secrets and mysteries. Enter for a chance to win these Bronze Age collections of SWAMP THING, HOUSE OF SECRETS, and HOUSE OF MYSTERIES.
![House of Secrets #34 1960-DC-Mark Merlin mystery-Monster sci-fi cover-G | Comic Books - Silver Age, DC Comics, Fantasy / HipComic House of Secrets #34 1960-DC-Mark Merlin mystery-Monster sci-fi cover-G | Comic Books - Silver Age, DC Comics, Fantasy / HipComic](https://storage.googleapis.com/hipcomic/p/1081318455bd0b39dd08b2ca127874af-800.jpg)
House of Secrets #34 1960-DC-Mark Merlin mystery-Monster sci-fi cover-G | Comic Books - Silver Age, DC Comics, Fantasy / HipComic
![House of Secrets #37 1960-DC-Monster bondage cover-Mark Merlin mystery issue-VG: Very Good Softcover/Paperback (1960) | DTA Collectibles House of Secrets #37 1960-DC-Monster bondage cover-Mark Merlin mystery issue-VG: Very Good Softcover/Paperback (1960) | DTA Collectibles](https://pictures.abebooks.com/inventory/31064018240.jpg)
House of Secrets #37 1960-DC-Monster bondage cover-Mark Merlin mystery issue-VG: Very Good Softcover/Paperback (1960) | DTA Collectibles
![House of Secrets #56 1962-DC-Mark Merlin supernatural story-Mystery & suspense-Black cover-FN: (1962) Fumetto | DTA Collectibles House of Secrets #56 1962-DC-Mark Merlin supernatural story-Mystery & suspense-Black cover-FN: (1962) Fumetto | DTA Collectibles](https://pictures.abebooks.com/inventory/30961307372.jpg)