Diamonds from the Darkside

A new murder sheds new light on an old crime - a huge diamond robbery. But the loot was never found. The ex-cons, newly released from prison, rush in to claim their share. They find the nest is empty. An innocent tourist harbours the cache of diamonds, but is totally unaware of it! Chief Inspector Spencer solves the murder, but to his frustration the whereabouts of the diamonds remain an enigma... Until the seemingly "innocent" tourist vanishes into the shadowy enclaves of Europe's black market in precious stones - hoping to emerge wealthy and unchallenged!