M15 intelligence officer Blake (Ballard Berkeley) asks Simon Templar (George Sanders), The Saint, to help him on the quiet to satisfy his suspicions that foreigner Bruno Lang (Henry Oscar) is involved in espionage and counterfeiting. The debonair Simon attends a dinner party given by the aristocrats Edith and John Morgan (Norah Howard & Charles Carson), where Lang is also invited. Edith’s pretty but daffy single niece Penny Parker (Sally Gray) is attracted to Simon, but he’s preoccupied with trailing Bruno when he leaves the party. The Saint sneaks into Lang’s house and steals from his safe a valuable document. Penny, seeking adventure, followed The Saint and on a dark country road the two are riding together when they rescue a beaten man Count Stephen Duni (John Abbott) who escaped his kidnappers and tells a tale of being tortured and forced to print £1,000,000 worth of counterfeit bills. Simon gets him medical treatment and hides him out in a hotel run by his friend Mrs. Buckley (Athene Seyler). Things get more involved when Penny follows on her own the Count’s kidnapper Kussella (Ralph Truman) and being an amateur sleuth gets kidnapped by Kussella’s gang in a tobacco shop. Kussella then offers to trade Penny for the Count. But Simon’s new American ex-con valet Dugan (David Burns), who wants to go straight, finds a way to rescue Penny before the swap. Meanwhile Scotland Yard Inspector Claud Teal (Gordon McLeod), affected with a thick Scottish accent and who is henpecked, suspects Simon of something but still doesn’t arrest him after he discovers the Count was slain in the hotel room that Simon brought him to. Also working with Lang is embassy official Stengler (Carl Jaffe), who gets panicky when The Saint pays him a call disguised as Inspector Teal.