Dawn Meade, 40, was discovered dead outside an apartment complex in Louisa, Virginia, in 2017. Detectives must determine whether her death was accidental or not, so they turn to surveillance footage to find out the truth.

In Alexandria, Va., Nancy Dunning, Ronald Kirby and Ruthanne Lodato are all fatally shot in broad daylight by a gunman knocking at the front door; detectives attempt to use security footage to track down the killer before they strike again.