Kevin and Joanne Dowling like to capture their children's milestones on videotape, then Kevin is accused of gunning down a woman in a nearby town, and his fate hangs on his video camera.

After Ohioan Richard Beasley vanishes, police discover that an online monster has been luring local men to their deaths.

Manling Williams returns home to find her young sons murdered and her sword collector husband, Neal, stabbed to death.

While Ron and Cynthia Phillips and their four children try to adjust to life in a remote Colorado town, home videos mask dark impulses within the Phillips family, ones that will lead to deceit, infidelity and murder.

In Colorado, second-time spouses Harold and Toni Henthorn seem to dote on their young daughter and each other, then their idyllic life is shattered by a hiking accident; the couple's home videos conceal a deadly predator who nearly escapes justice.

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

As seen in home videos, the Snyders are thrilled when their 34-year-old son, Mike, finally starts a family with his sweetheart, then Mike vanishes after being diagnosed with a terrible illness, and his horrific fate comes to light only years later.

In Anniston, Ala., the townspeople grieve after Frank Hilley is struck down by a mysterious sickness, then his daughter falls ill, and the family becomes suspicious; home movies tell a shocking tale of murder and reveal the identity of a monster.

The Yates family moves to Spokane, Wash., only to find it besieged by a serial killer who's targeting young women and confounding the police; now, the family's home videos provide a look at one of the most notorious killers in the United States.

In Ohio, Jack and Linda Myers are shot to death in their sleep, and the only eye witness is their sleepy 4-year-old grandson; now, family members speak about what happened that night and share home movies revealing a monster living in their midst.