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'
A Shot in the Dark (1964 film) bomb that had been planted by Commissioner Dreyfus. Having witnessed the explosion, and realizing that he has failed again to kill Clouseau, Dreyfus is reduced to an animalistic fury and is taken away. Finally, Clouseau and Maria celebrate the clearing of her name with a long and passionate kiss—which is swiftly interrupted by another sneak attack by Cato. Sellers was attached to star in the adaptation of Harry Kurnitz's Broadway hit before the release and success of "The Pink Panther", but was not pleased with the script by Alec Coppel and Norman Krasna. Walter Mirisch approached Blake Edwards and asked