Interpol Pickup Alley

After his sister is murdered while trying to pass on information about a drug dealer, FBI agent Charles Sturgis (Victor Mature) dedicates himself to tracking down international drug kingpin Frank McNally (Trevor Howard). Traveling to London on a lead, Charles learns that McNally is difficult to identify, as he changes his appearance regularly. Charles finds McNally's courier, Gina (Anita Ekberg), and places her in danger by following her across Europe, hoping that she'll lead him to McNally.