Alfonso Estela

Robin Hood star Richard Greene plays an agent who goes to the French-Spanish border to round up some smugglers and counterfeiters after his brother is murdered. He is helped by singer Anouk Aimee, who he falls in love with. (imdb)

A young policemen witnesses a bank robbery which will become his first case. To catch the thieves he will infiltrate himself as one of the gang members. At first it works, but it won't be so easy afterwards.