The House of Canted Steps by Gary Fry
“When Mark Cookson values a house and puts it on the market with his estate agency, he begins to suspect the place is haunted.
Mark’s ex-wife has a new lover and is now pregnant with a second child. They and Mark’s seven-year-old son are seeking a bigger property, and see this house on the agency’s website. It is perfect for them.
After they move in, Mark must confront his own familial demons to save his son from the terrible ghostly ones that linger in . . . The House of Canted Steps.”