House Of Mystery In Justice League Dark #10

The House of Mystery makes an appearance in Justice League Dark. Seems that John Constantine won the key in a poker game with Father Time and Dr. Occult. He unlocks a door in an alleyway and the house is explained as being a twin to the House of Secrets. They are both way stations on the road to limbo and move around a lot.

The group is introduced to n'aall, a demon that is the caretaker of the House of Mystery: