A adolescent girl,Charlotte ,was walking with her cocker spaniel when a Rotweiller dog attacked her dog,she was wounded by the Rottweiler who killed her dog and escaped.Her father Mr. Garret arrives and says that his neighbor, a man of African origin has a pit bull and he is responsible of the attack.Alain and Vincent visits the neighbor, a young man receives them (his father is working in a supermarket) and Vincent notices that the dog has been washed (because he was dirty, was the answer of the young man).At the police station arrives a classy woman,Mrs Laeticia Charron because her 16 years old son, Cyrille has disappeared.About parents and friends Mrs. Charron answers that the father of Cyrille died in an accident, also the paternal grandparents have died.
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