Doorway to Nightmare, introduced in 1978, was the last of the DC “Mystery” line of titles in the 1970s that became the forerunner of Vertigo. It did not have a consistent creative team—the intent was to create writer-artist pairings that had never occurred before, except for the cover art of Michael William Kaluta. Madame Xanadu, the star of the series, was not a host but an active participant, albeit never the main character in her stories.
EHT Comics 