Murderous Houses. You know what I mean. Of course they feature most especially in gothic mysteries, but not always, regular mysteries like a nicely spooky house too though occasionally the mystery within has little to do with the house on the cover. (I hate when that happens.) The creepy house is simply there as a lure for suckers like me.
For if the cover art features a sinister house, then I will always pick up the book and, at least, take a good look. And doesn't it make your blood boil when the title features a house but the cover art doesn't? Drives me mad. But then, I've been known to overreact.