The Light Touch - Richard Brooks

Sam and Felix are art thieves. Sam has just stolen a picture from a museum in Italy, but told Felix that it was lost in a boat accident. He wants copies made to sell while he will sell the original and get paid both ways. To find an artist, they pick the young, beautiful, naive Anna. When Anna has doubts, Sam strings her along and then marries her and go to Sicily on their honeymoon. Anna finds out that Sam is a thief and is very disappointed. Felix finds out that Sam has the original and is out to get it. The police are also waiting along with the buyer that Sam has for the painting.