Hunter (2003)

Both the synopsis and episode summary state the shots occured moments *before* crossing the finish line. Watching the episode it's obvious that they are shot *after* the race is over and the horses are trotting back to the stables.

When Antonia helps draw up the composite, it shows the tattoo on a man's left arm. All of the flashbacks show the gun in a man's right hand...

In this movie, Dee Dee is Single and currently engaged. But what happened to the guy She married during the show's run in the 1980's when She left the show.