The Equalizer S03E15 - Something Green

When the son of a woman who was fathered by a Swiss diplomat is missing, she calls McCall. He then talks to the boy's father and learns that he's in bed with some criminals who use him to get their money into Swiss banks. It seems he stole from them and it appears they grabbed his son to get him to return it but he claims that he sent the money out of the country. So McCall tries to shake the men who have the boy.