Seventeen-year-old Chris Daigle vanishes shortly after leaving his high school for the day in Missouri City, Texas. His family and law officials spend years dissecting the time leading up to the day the baseball star disappears.

Teenagers Cheryl Miller and Pam Jackson go out to enjoy the first day of summer in the small town of Vermillion, South Dakota, and vanish. Despite rumors, the families never give up hope until the day the mystery is revealed.

Charlotte Moriarty and her infant son take a stroll to the market in Hau'ula, Hawaii, and never come home. It will take more than 30 years to find out what happened to the mother and baby on the day that they vanished.

When Lynda McClelland goes missing from her home in Forest Hills, Pennsylvania, she leaves behind three beloved grandchildren and a heartbroken daughter. An agonizing search uncovers answers that lie painfully close to home.

Michele Whitaker is leading a troubled life when she disappears without a trace. Her family and local police investigate every possible lead for six painful years until a phone call gives them the answers they're looking for.

When Dena Raley-McCluskey vanishes from Modesto, California, investigators focus on her ex-boyfriend because of their stormy relationship. Scant clues stump the police until a break in the case uncovers the shocking truth.