For the police the final fateful hours in the victims life becomes a puzzle. They try to understand where they were, who they met, and what happened to get their answers. The Last 24 follows investigators working the most shocking murder cases as they reconstruct those tragic final hours in the victim's life.
A successful vacuum salesman is gunned down outside his Indiana office. As detectives untangle the victims' final 24 hours, all the clues point to a hired hit. But they eventually find the killer much closer to home.