There's a whiff of murder in Sainte Victoire when Raffy Ozanne is found lying dead in his own shop, leaving his brother Raimund distraught. Cooper was Ozanne Perfumery's last customer of the day and Raffy is locking up after him, when a robber wearing a clown mask forces his way in. He ties Raffy up, gags him and steals the takings. Raffy starts to suffocate. Hearing the commotion Raimund comes in, but he is too late to save his brother. Jean and Dom arrive at Ozanne's, as Raffy's body is being taken away. As well as the takings, an antique perfume bottle was stolen, and Caron needs Jean's help to trace it to the murderer. The prime suspect is a group of robbers that have been operating in Toulouse, but they need proof. Gloria and Cooper are having breakfast when Gendarme Richard calls to confirm that she's bringing her car in to be fixed. Cooper offers to take Douglas for a walk. Afterwards, Cooper surprises Gloria wearing a mask that Douglas dug up on his walk. Gendarme Richard recognises it as the mask worn by the Toulouse robbers and immediately takes Cooper in for questioning. Barbara has deadly plans to rid herself of Jean and with Simone's help knows just how to do it. Under questioning, Cooper insists on his innocence, but the circumstantial evidence is stacked against him. He was at the perfumery. He had the mask. Could he have killed Raffy? When Caron asks Gloria about Cooper, the two months they've been together don't persuade him that she can vouch for Cooper's character. Jean promises Gloria that she will help. Can Jean prove Cooper's innocence and reunite him with Gloria? Or will Barbara get to her first?