After a woman and her unborn child are stabbed to death on Halloween by a man wearing a wolf mask, investigators must calm the community and find the killer before he strikes again.

After responding to a robbery at a sporting goods store on Christmas Eve, an Irving, Texas police officer is gunned down in cold blood.

An abandoned car filled with blood found in a pond leads investigators on the trail of a missing woman and her teenage daughter, who never showed up to the family's July 4th party; when their remains are found in another pond, everyone in their small town is a suspect.

When a young woman goes missing after a July 4th beach party, investigators have few clues to go on until a twist in the case reveals she might be the latest victim of a predator terrorizing the area.

When a young woman home from college ends up murdered in her home and the tools of her demise turn out to be the rolling pin and carving knife the family planned to use for Thanksgiving dinner, investigators struggle to solve this holiday horror.

When a college student is found dead on the side of the road after a New Year's party in her hometown of Fillmore, CA, detectives are faced with the possibility that the killer might have been one of the many partygoers ringing in the new year.