"Blake" (Patrick Holt) is determined to go to extraordinary lengths to bring down a gang that are peddling stolen goods in London. He starts off by staging the robbery of a jeweller's. Of course he is swiftly apprehended, and whilst in prison befriends gang member "Joey" (Michael Balfour) and they concoct an escape plan together that will enable him to infiltrate the smugglers on the outside and identify their kingpin. Once out, he attracts the suspicions of henchman "Mack" (Michael Brennan - where on Earth did the accent come from?) but the support of the boss's savvy girlfriend "Joan" (Sonia ...