Vanished with Beth Holloway

A 9-year-old girl goes missing from her Florida home; a high-school teacher vanishes.

A young woman vanishes off the deck of a cruise ship.

A 24-year-old goes missing after warning her father of a suspicious character; two teenage girls go missing.

A pregnant woman vanishes from the streets of Philadelphia; a toddler is abducted.

A teen leaves for school and never returns home; a young man disappears while on a school trip to Chicago.

A couple who vanished from the streets of downtown Philly; a teenage paperboy who became the first milk carton kid; and a little girl who loses her life but leaves behind a legacy of hope.

A college graduate goes missing after a night out with his friends; a woman reveals the story of the kidnapping she and her sister endured as children.

Family members search for their missing child who has special needs; a family searches for a daughter who disappeared 15 years earlier.

A 10-year-old girl vanishes while walking home from a friends house; a mother helps bring her daughter's killer to justice.