 In August 1960 it seemed the film would be postponed indefinitely when Pal announced he intended to make "The Return of the Time Machine".However that film was postponed (it would never be made) and in January 1961 Pal announced "Grimm" would definitely be his next film.Pal wanted to cast Peter Sellers and Alec Guinness as the brothers, but was over-ruled by the studio.