This is a story narrated in Judges 3. It features a left-handed man, who assassinates King Eglon of Moab. His being left-handed allowed him to go undetected by having a sword under his clothing on his right side. Usually, a concealed weapon would be on the left side, thus facilitating a right-handed assassin. Ehud managed not only to kill the king, but get alone with him and carry out the deed in a manner that would delay the king’s attendants in coming to his aid. Moab had been exacting extortionate amounts of money from Israel for 18 years. That ended with Eglon’s ignominious demise.