Rick refuses to recognize Marianne because 15 years ago, Rick helped convict Sorenson, who has now been released from prison. Rick was placed in the witness protection program, and now with Sorenson released, Rick doesn't want to put Marianne's life in danger.
Sorenson and his partner Albert Diggs (Bill Duke) are now out for revenge on Rick. Marianne has blown Rick's cover, and he makes a frantic call to his relocation contact for a new identity — only to discover that his old contact has retired.
What's more, his new contact, Joe Weyburn (Stephen Tobolowsky), is in league with Diggs and Sorenson. Just as Marianne prepares to confront Rick, Sorenson and Diggs show up at the gas station with guns blazing.
They kill Rick's kindly old boss at the gas station and pin the murder on Rick and Marianne, sending Rick and Marianne on the run.
During one of the scenes the audience sees Mel Gibsons character's feet being hit by a bus. This was originally a mistake that happened to the stunt double, but was left in the final film.