When Frank Hilley is struck down by a mysterious sickness, the entire town of Anniston, AL grieves. But when his daughter also falls seriously ill, the family becomes suspicious. Vintage home movies trace a shocking tale of murder—revealing a monster.

Outside Los Angeles, sword collector Neal Williams is the house-husband while his wife Manling keeps the family afloat. It's a tough but happy life, as their home videos attest, until Manling returns home to find her family slaughtered -- at sword point.

Family and faith have always been important to Richard Beasley, as their home videos show. Which is why it's so scary when one day — the Ohio man vanishes. Especially after police discover that an online monster has been luring local men to their deaths.

In rural Ohio, an intruder brutally guns down Jack and Linda Myers in their sleep. The only witness is their sleepy 4-year-old grandson. But their extensive home movies — aired here for the first time — may have captured a monster lurking in their midst.

The Snyders are thrilled when their 34-year-old son Mike finally starts a family with his sweetheart — as seen in their home videos. But after being diagnosed with a terrible illness, Mike vanishes. Only years later does his horrific fate comes to light.

In Colorado, second-time spouses Harold and Toni Henthorn seem to dote on their young daughter and each other, until their idyllic life is shattered by a deadly hiking accident. Their happy home videos conceal a deadly predator who nearly escaped justice.

The Yates family moves to Spokane, WA only to find it besieged by a serial killer who's targeting young women and confounding the police. Now, the family's never-before-aired home videos provide a chilling look of one of America's most notorious killers.

In Pennsylvania, Kevin and Joanne Dowling like to capture their kids' milestones on videotape in their modest suburban home. But when a woman in a nearby town is gunned down - and Kevin is accused of murder - his fate hangs on that same home video camera.

After moving to a remote town in Colorado, Ron and Cynthia Phillips and their four children try to adjust. But their never-aired home videos mask darker impulses within their family - ones that would lead to a complex web of deceit, infidelity, and murder.

After a taping of their local-access TV show in rural Vermont, Chrissy and Charlie Billis have a terrible accident, smashing their car into a tree. Only one survives. But tapes from the couple's TV show suggest a sinister tale behind what really happened.