 The "Doorway to Nightmare" stories were typically structured around a protagonist stumbling upon Madame Xanadu's shop (stated to be on "Christy Street" in the East Village) (changed to Greenwich Village in "The Unexpected" #192) and deciding to enter.She (usually) or he would tell a story of romance that was frustrated by an outside element.Xanadu, through a tarot reading, always determined this element to be of an occult nature, then sent the protagonist to do some task in which she would intervene with the use of her powers.