A Ticket to Tangier

Published in the collection The Lives of Harry Lime - novelization of episode 4 of the radio program of the same name as the collection.
Broke in Paris, Harry Lime sees an advertisement in the newspaper inviting him to Tangier. The flight there, paid for by a mysterious benefactor, had Lime meet an air hostess named Patsy. She, it turns out, is was that patron and she had a shipment of heroin she needs his help selling. He does not like dope and he does not like her but he does like money.