Books with title The ABC Mystery

Soccer mom Yvette Palmer lives an ordinary life in San Antonio, Texas when a box is delivered to her by mistake, and in taking it to its rightful owner - a crotchety neighbor named Mona who shares her back fence - is drawn into a strange and haunting tale. Mona's ratty robe, mood swings, and secretive behavior all raise red flags, and Yvette is sure someone else is living there despite Mona's claim to live alone, but Yvette is unable to break away as she listens to how Mona transformed from a young college woman about to be married to the odd, reclusive, ghost of a woman she is now. As Yvette listens to her neighbor's tale, she discovers a shocking connection, but doesn't know whether Mona's come to help or to harm her and her family.

Brief Summary by Robert Houghton: Staying at a creepy old house in the country surrounded by snowed-up roads, cut off from civilisation, Roger, Diana, Snubby and Barney witness strange goings-on, all tied up with ancient old legends of how the great knocker on the front door always bangs by itself to warn that traitors are in the house. When someone bangs on the door in the middle of the night but then mysteriously vanishes, faces peep in at windows, snowmen seemingly move by themselves and the phone is suddenly cut off, the children decide that it's their job to unravel the mysteries surrounding Rat-a-Tat House.