The Spiral Staircase (Aka Some Must Watch)

"Adept at laying one icy finger on the back of your neck" Spectator

Helen Capel takes the position of lady-help in a remote country house owned by the Warren family and, before long, learns that a murderer is on the loose. As four young girls lose their lives the last of them strangled in a lonely house just five miles away Helen realises that the maniac is closer than she fears.

In a bone-chillingly creepy atmosphere with suspicions swinging between characters, this is a book that will stay with you long. As with her other books this one also was made into a successful noir film.