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After a successful sting, narcotics agent Michael Kenyon (Nigel Patrick) receives a tip that a drug smuggling operation is underway. A series of clues lead Kenyon to suspect Rita Compton (Elizabeth Sellars) and her brother, Roger (Terence Morgan). He trails the siblings as they head to Cannes, France, for a supposed vacation. When he goes undercover to gain the confidence of the lovely Rita, he soon develops feelings for her. As new details emerge, Kenyon realizes all is not as it seems. Wikipedia