On March 18th, 2011, 32-year-old Patty Ayala is murdered at the Burger King where she works. Police find the safe open and a mysterious message next to Patty's body. They turn to surveillance video—and it's there the killer emerges from the shadows.

On April 4th, 2014, Kimberly Robertson's battered body is found on a sidewalk after a date with her boyfriend. A network of surveillance cameras plays out Kimberly's last few hours alive.