WHO DONE IT? is mildly notable as the feature film debut of TV comedian Benny Hill, a long way from his latter saucy persona. Here here's a mild-mannered private detective who becomes embroiled in a lot to assassinate distinguished scientists. It's a film made with a typically '50s feel, with sprawling plotting propped up by regular cameos from familiar faces of the era, such as Charles Hawtrey. The comedy is generally acceptable, with a lot of slapstick and material made from exasperated police, although some of it's a bit too shrill for its own good. Belinda Lee steals all her scenes in against-type role.