Alene and George Jenkins are a couple living a perfect life. When their desire for children leads them to adopt a son and a daughter it seems their family is complete. But instead it triggers a dark spiral ending in an unspeakably awful crime.

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.