Episode synopses (via the Radio Times):
Episode one
The fashionable, glamorous world of the successful photographer-that is the setting for tonight's new five-part thriller serial. But for the hero, Bill Page, and his pretty partner, Irene Grant, danger and violence lurk beneath the surface.... (Radio Times, 23 June 1966, p.7)
Episode two
Photographer Bill Page gets an urgent message about an old friend, erstwhile master-crook Lazlo Bergmann. But he reaches Bergmann's flat too late. (Radio Times, 30 June 1966, p.7)
Episode three
Ever since he escaped from Hungary with his niece Anna, the Countess Hazany, and the London photographer Bill Page , master-crook Lazlo Bergmann has been hounded by an American insurance agent. Kershaw, who suspects him of stealing the Countess's jewels. Kershaw's final interrogation is too much for Bergmann. He leaves a coded note and two keys for Anna, and then hangs himself. Anna turns to Bill Page for help. Meanwhile members of London's underworld hear of the note and close in on Anna..... (Radio Times, 7 July 1966, p.17)
Episode four
Pembridge is desperate to get the keys to the Hammersmith safe-deposit box. He decides to force Bill's hand by kidnapping Anna. (Radio Times, 14 July 1966, p.7)
Episode five
Bill, under suspicion for Kershaw's murder, finds that Pembridge and his men are hiding Anna. The police close in, but too late. (Radio Times, 21 July 1966, p.7)