Watch Grave Mysteries

While dating an older man, 18-year old Brittany Clardy's life veers from that of a model student to a lost soul, then she disappears, and her family panics; now, investigators must unravel her complicated life filled with secrets and regret.

Ty Underwood leaves her insular hometown to start fresh, vowing to be forthright with potential suitors about being transgender; her shocking murder exposes chats with anonymous men on a phone app.

In the wake of a broken marriage, 28-year old Samantha Lezark's struggle to find love again has a fatal ending. Now, investigators must follow her digital trail through different chat rooms to uncover her killer.