A storm rattles the night in Key Largo, Florida, as an intruder slips silently into the home of newlyweds Michael and Missy MacIvor. As daylight clears away the rain, a nightmare is revealed that will haunt the entire community for years to come.

After young mother Danielle Jennings is found strangled to death in her apartment, detectives immediately believe she knew her attacker, then, a witness comes forward with a ringer of a clue that leads them to an unthinkable monster.

In Iowa, Shirley Wilson's son finds her stabbed to death in her home; with no evidence of forced entry, detectives believe this grandmother of 12 knew her assailant, leaving the family wondering who has betrayed them in cold blood.

When a charitable, up-and-coming actress is savagely murdered in her home, police believe an angry, revenge-hungry killer is responsible. But no one could expect the lies, obsessions, and evidence that will be uncovered in this shocking cold case.