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Every move could be his last – and his only clue to survival is a single mysterious word: Halidon.

Alex McAuliff has just received an offer he can’t refuse. A company called Dunstone Ltd will pay him two million dollars for a geological survey of Jamaica’s interior – and they require his absolute secrecy. But British Intelligence are aware of the deal, and they’ve let Alex in on a secret of their own: the last survey team Dunstone dispatched to Jamaica vanished without trace. Now it’s too late to turn back.

From the moment he lands in Jamaica, Alex is a marked man. He already knows about Dunstone…which means he knows too much.