An argument over a priceless stamp turns to murder when a stamp dealer is found dead in his office. A rival collector is accused of the crime and the theft of the rare stamp. But when he arrives at Saber's office asking for help to clear his name, Saber must determine if he is helping an innocent man being played for a fool.

In an audacious daylight robbery an £8000 payroll is stolen from the Diamond Manufacturing Company. When notes taken from the heist begin to appear in circulation and two of the alleged robbers turn up dead, Saber must act quickly before anyone else is murdered.