Lock Every Door by Riley Sager contains all the horror and gothic tropes that I love in this type of story – ominous dreams, strange noises at night, cryptic notes, secret nooks and crannies, a combination of unfriendly and over friendly neighbours, mysterious and sudden disappearances, and that's just for starters. The creepy, picturesque setting of The Bartholomew was as glamorous and seductive as it was eerie and claustrophobic, and as you would expect has a cursed history, of suspicious deaths.