you are a long-range assassin

One day you get a client who wants to kill your arch enemy Leonard, you happily accept it and also a big payment that benefits you

You are on the roof of the building with a long-range rifle in your hand, you aim at a small alley with dim lighting, there you can see Leonard talking to someone while smoking

when you are about to pull the trigger of the rifle, Leonard turns right at you and grins as if to indicate that he had noticed it from the start