I'm an Explosive is a 1933 British comedy film directed by Adrian Brunel and starring William Hartnell, Gladys Jennings and Eliot Makeham. In the film, the son of an inventor accidentally drinks an explosive liquid.
With the outbreak of World War I, Sir Francis and Lady Villiers (Annesley Healey and Ellaline Terriss) and daughter Ann (Lillian Hall-Davis) watch son of the household Robin (Godfrey Winn) and family chauffeur David Marshall (Jameson Thomas) go off to fight. David does well in the army and is quickly promoted through the ranks, while Robin falls in love with and marries a local girl. Robin is killed in action on the Western Front, leaving his bride a young widow with a baby.