The listing, LOST BOY LOST GIRL by Peter Straub (BEFORE YOU BID ASK HOW MUCH SHIPPING COSTS TO YOUR LOCATION) has ended.
https://www.youtube.com/watch?v=TI_rtIWfQ4g
A woman kills herself for no apparent reason.
A week later, her son, Mark disappears.
The boy's uncle believes an abandoned house is at the root of the trouble.
He fears that in peeling back the house's hideous secrets, Mark came across its last and greatest secret.