Snitch Ruige Ronny is kept imprisoned in a cage together with a chained hound at Dogville, where he had been working to spy. Lawyer Poortmans cleverly covers his tracks with an antedated contract for the transfer of his animals to another firm, 'De Kluif' (Dutch for the Bone). When the corps commander hears Tom and Segers shadow the lawyer without authorization from the investigating magistrate, he orders them to cease and gives them another case, the disappearance of Gracienne Wuyts, daughter of a textile baron, according to her 30 year younger lover Diederik with ...