Carol-Ann and James Sharp seem like a match made in heaven, but behind the veneer hides a monster in plain sight; loved ones close to the couple sit down for the first time on camera to make sense of a murder that none of them saw coming.

After locking eyes at the gym, Rebecca Thudin and Larry Fenton get married; then, Larry is shot dead in an apparent home invasion; home videos and interviews with family members help to unravel what really happened.