The Voices profit from the game by gambling on the outcome, and a ruthless killer such as Harry Exton can make a modestly wealthy man extremely rich.
This grants him temporary freedom and he settles down anonymously in a small town, even starting an affair with a local waitress.
Exton has advance warning of their presence when he spots them disguised as tourists in the Diner his girlfriend works at, and notices that one is missing two markers.
Exton kills all the other operatives apart from one with whom he makes a deal - he cuts off his own finger and gives it to the surviving Button Man before dropping a tracking device (inserted into a filling by the jealous husband) into a lake.
[3] In March 2019, Netflix announced they'd hired Brian Helgeland to write and direct an adaptation of Button Man as a feature-length film.