Dominic Bernard Patrick Luke Monaghan is a German-born British actor. Monaghan first gained fame as Hetty Wainthropp's sidekick Geoffrey in Hetty Wainthropp Investigates (1996–1998). He first gained exposure in film through his role as Sasha in the television film Hostile Waters (1997) based on the true story of a Russian and an American submarine colliding in the Cold War.
