Watch First 48 Season 10 Episode 3 now!

The First 48 is an American reality television show based on homicide detective units in various cities across the United States. The show’s premise is summarized in its title voiceover: “For homicide detectives, the clock starts ticking the moment they are called. Their chance of solving a case is cut in half if they don’t get a lead within the first 48 hours.” A countdown timer is shown occasionally during the show to reinforce this, and to add drama.Each episode picks one or more homicides in different cities, covering each alternately, showing how detectives use forensic evidence, witness interviews and other advanced detective skills to identify suspects.