Two days after Christmas a mass shooting terrorizes a small town. After killing two people and wounding many more the gunman is taken into custody. When police search for answers they uncover the worst family massacre in US history. (43:43)

New Year’s in a tiny town, Joanna and Carl Dutcher ring in the year with their grandson. Days later, they are found violently killed. The hunt for the killer leads police to a sinister group that threatens the entire community. (43:54)

On Christmas Eve in a quiet town, elderly couple Bob and Idella Young are brutally slain at home. A bloody glove found at the crime scene has the killer’s DNA, but no one matches the sample. How do detectives solve this mystery? (43:54)

As the holidays begin, fire fighters respond to a house fire and make a gruesome discovery. Three people have been shot dead inside. A nationwide manhunt takes authorities through Christmas, as they pursue the heavily armed murderer. (43:54)

Earl and Terry Robertson are found brutally murdered in their home just before Thanksgiving. Is this a holiday robbery gone terribly wrong? Or has the horrific crime been committed by someone the couple knew, and trusted? (43:54)

A holiday is ruined when a couple is murdered during what looks like a brutal home invasion. Police learn the true motive for the double homicide is a shocking tale of lies and betrayal. Narrated by Chris Hansen. Episode 104 (43:54)