 Aside from directing the 1939 "Saint" film, "The Saint in London", he also directed two episodes of "The Saint" in the 1960s, making him the only individual (other than Charteris himself) to be connected to both the Hollywood film and British series of "The Saint".Carstairs directed many British comedies including many of Norman Wisdom's films.Carstairs died of heart attack on 12 December 1970, aged 60.