Man with a Gun. 

A disgraced Marine sniper looks to start a new life and stumbles across America's greatest secret.

Dishonorably discharged Marine sniper, Web Weller has no job, and no family, but he does have a dream: to be published. While traveling west he discovers a small Minnesota town, made up of a disproportionately large number of veterans who take him in as one of their own. He forms a bond with one man in particular, Pa Concannon, who becomes a father figure to him. But Web begins uncovering hints and clues that suggest his new friend and mentor might just very well be John F. Kennedy's assassin. Now, Web must decide whether to betray Pa’s trust for a chance to finally realize his dream and write perhaps the greatest story of our generation.