Wash this blood clean from my hand, paperback/fred vargas

Commissaire Adamsberg is in Quebec on a training mission, when he is accused of having savagely murdered a young woman.

The murder fits a pattern of killings that has happened in the past; Adamsberg must go on the run from the Canadian police and track down the terrifying killer himself.

Fred Vargas has a wonderfully offbeat imagination that makes each of her novels a refreshing delight }Guardian{.