A murder victim's wife is forced to become the detective after the police close the case as an accidental shooting. Caro Weston returns to Key West from her New York home, determined to find evidence, but before she can act, a dark foreigner abducts her, taking her to an obscure, uninhabited island. The man, seductive Collin Sanders, attempts to convince her he is not the killer, beguiling Caro with his gentleness and show of sincerity. She finds herself reluctantly falling in love with Sanders--until a discovery at Death Key sends her trust reeling..