Salvation (1998)

The story chronicles the story of two Denver cops, Albert Beckwith and Satch Morelli who are sent to California to escort the a wayward witness to a brutal murder, Kevin Egan, back to Colorado for trial. What they don't know is that killers, Roscoe Bean and Jimmy 'Doc' Horowitz, have been dispatched to silence this witness and this witness knows that he's in danger, but nobody believes him. The story speculates on what happened to the many characters along the way including missing mob money and a dark betrayal. Though the names have been changed, this movie is ostensibly based on true events in the Denver area.