Episode Detail: Foyle's War: Invasion - Mystery!
In “Foyle's War: Invasion,” DCS Foyle (Michael Kitchen) investigates a barmaid's murder, which may be linked to an American soldier (Peter Youngblood Hills) with whom she was having an affair. Susan Davies: Zoe Tapper. Samantha Stewart: Honeysuckle Weeks. Sgt. Paul Milner: Anthony Howell. Capt. John Kieffer: Jay Benedict.