Trail of the Pink Panther series regulars include Herbert Lom as Chief Inspector Dreyfus, Graham Stark as Hercule LaJoy (last seen in the 1964 Pink Panther film "A Shot in the Dark"), Burt Kwouk as Clouseau's faithful man servant Cato and André Maranne as Sgt. François Chevalier. "Trail" featured the animated opening and closing credits, animated by Marvel Productions and written and directed by Art Leonardi. Director Blake Edwards dedicated the film to Sellers, "the one and only Inspector Clouseau." Despite the dedication, Sellers' wife Lynne Frederick filed a $3 million lawsuit against the film's producers and the studio, claiming that the film diminished Sellers'
The Pink Panther 2 in fact, kept the real Pink Panther in his possession, having switched them at the museum before he was about to leave France. The Tornado, an expert on gems, would have recognized the Pink Panther to be a fake; therefore, his suicide note was forged, and he was murdered. He reveals that he had given Sonia's car a ticket two days before the Pink Panther was stolen, contradicting her alibi of having been delayed to the crime scene because of her flight, which revealed to him that Sonia was the culprit. Dreyfus tries to claim credit for having appointed Clouseau