Pool My Way by Earl Strickland - interpool

U.S. narcotics agent Charles Sturgis trails international dope smuggler Frank McNally by following his reluctant accomplice, Gina Broger, through the "pickup alleys" of New York, London, Lisbon, Rome, Naples and Athens. After Gina is finally arrested by Interpol, she helps Sturgis trace McNally and his $3,000,000 consignment back to New York.