In the winter of 2013, 14-year-old Shaniesha Forbes never made it home after school. Her charred remains turn up on a Brooklyn beach days later, but this teen leaves behind a mountain of digital evidence for the NYPD to sift.

Armada, Michigan could be ripped from a Norman Rockwell painting, but the town changes forever when April Millsap's body is found. Police search for the teen's missing phone and discover a fitness app.

When 32-year-old John Ray is murdered in his Atlanta home, investigators are stumped. For seven years, his case goes unsolved until cold case detectives take another look at the evidence.