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 1964, Sellers began filming "A Shot in the Dark", an adaptation of a French play, "L'Idiote" by Marcel Achard. Sellers found the part and the director, Anatole Litvak, uninspiring; the producers brought in Blake Edwards to replace Litvak. Together with writer William Peter Blatty, they turned the script into a Clouseau comedy, also adding Herbert Lom as Commissioner Dreyfus and Burt Kwouk as Cato. During filming, Sellers's relationship with Edwards became strained; the two would often stop speaking to each other during filming, communicating only by the passing of notes. Sellers's personality was described by others as difficult and demanding,