The Hanging Valley  The Hanging Valley is the fourth novel by Canadian detective fiction writer Peter Robinson in the Inspector Banks series. It was published in 1989, and reprinted a number of times since. A faceless, maggot-ridden corpse is discovered in a tranquil, hidden valley above the village of Swainshead. When the identity of the body is discovered, so is a possible connection with an unsolved murder in the same area five years ago. Among the annoyingly silent suspects are the Collier brothers, the wealthiest and most powerful family in Swainsdale; John Fletcher, a taciturn farmer; Sam Greenock, cocky owner of a Local guest house; and his troubled wife, Katie, who knows more than she realizes. When the Colliers use their influence to slow down the investigation, Inspector Alan Banks heads to Toronto to track down the killer. He soon finds himself in a race against time as events rush towards the shocking and haunting conclusion of his fourth case.