Terry Southern of the Monty Python team. Cleese later described McGrath as having "no idea of comedy structure" and complained that the film ended up as "a series of celebrity walk-ons." The film was shot in London between February and May 1969. The cast was headed by Sellers (as Guy Grand) and Ringo Starr as his son Youngman Grand (a new character created for the movie), with cameo appearances by Spike Milligan, Christopher Lee, Laurence Harvey, Raquel Welch, Roman Polanski and Yul Brynner. As with "Dr Strangelove", Sellers habitually improvised on the script during filming. During production McGrath and Southern discussed a
Peter Sellers Panther Strikes Again". During the filming from February to June 1976, the already fraught relationship between Sellers and Blake Edwards had seriously deteriorated. Edwards says of the actor's mental state at the time of "The Pink Panther Strikes Again", "If you went to an asylum and you described the first inmate you saw, that's what Peter had become. He was certifiable." With declining physical health, Sellers could at times be unbearable on set. His behaviour was regarded as unprofessional and childish, and he frequently threw tantrums, often threatening to abandon projects. Peter Evans mentioned that Sellers was a "volatile and