Amateur detective Albert Campion awakes in hospital accused of attacking a police officer and suffering from acute amnesia. All he can remember is that he was on a mission of vital importance to His Majesty's government before his accident. On the run from the police, he struggles to put the pieces ...

Amateur detective Albert Campion awakes in hospital accused of attacking a police officer and suffering from acute amnesia. All he can remember is that he was on a mission of vital importance to His Majesty's government before his accident. On the run from the police, he struggles to put the pieces together while the fate of England is at stake.