It was a dazzling two-man jewel robbery that went like clockwork but when Arran and his confederate Bain fall out the plot takes a sinister turn. Bain learns that Arran has left with the take and without his wife Caroline for Gibraltar. With Caroline as bait and a false passport Bain follows Arran - but his single-minded desire for retribution is weakened by his attraction to Caroline which for the first time threatens his criminal existence. And Bain can secure revenge only at the expense of his freedom . . .