In North Port, Fla., police receive a call reporting that a young mother has gone missing; in an effort to find her, detectives follow a trail of incoming 911 calls that reveal a heartbreaking story more horrific than they could have ever imagined.

In Dayton, Ohio, a young mother goes missing after attending a party one evening. When her body is found, her identical twin is certain foul play was involved.

When a young woman disappears after a visit to the mall, and investigators discover from store surveillance footage that she has been abducted, she is found dead in the woods.

In Rison, Ark., a young woman is abducted from her home in the middle of the night; when investigators dig up her body in the woods, they uncover an appalling murder plot that led to the victim's gruesome demise.

When a tip from a missing persons' network helps identify the body of a John Doe murder victim, investigators' questioning unravels a dark tale of betrayal.

In the suburbs of Atlanta, Ga., a pregnant woman and her fiancé are kidnapped on the night before their baby shower and the fiancé's family receives ransom calls that same night.