From Wikipedia the free encyclopedia Jonas Franklin Ball born 3 May 1975 in Carmichael California is an American actor who played John Lennons murderer Mark David Chapman in The Killing of John Lennon Ball had a few television appearances prior to his role as Chapman He starred as CIA Officer Benjamin Keynes in The Objective the new film from The Blair Witch Project director Daniel Myrick about a CIA operative who commands a Special Forces Operational Detachment into Afghanistan In this film his character may or may not have been a part of the Special Activities Division of the CIA Description above from the Wikipedia article Jonas Ball licensed under CCBYSA full list of contributors on Wikipedia