Five-month-old Sabrina Aisenberg vanished from her crib in her home near Tampa, Florida. The disappearance tapped into every parent’s worst fears and captivated the nation’s attention. The investigation quickly zeroed in on Sabrina’s parents. But could Sabrina have been kidnapped? And is she still alive today?

A promising Colorado teen who dreamed of becoming a nurse disappears in the middle of the night. Police initially deem Lashaya a runaway, but evidence points to foul play. Was she forced into sex trafficking? Does her ex-boyfriend know more than he told investigators? Who were the strangers seen near her last known location?

Thirty-year-old Steven Koecher abandoned his car in a Nevada cul-de-sac nearly two hours from his Utah home. As a devout Mormon, Steven’s unexplained proximity to Las Vegas and a series of mysterious road trips point to unexpected secrets.

A 26-year-old Army veteran vanishes from a Carnival cruise while celebrating his father’s 60th birthday over Labor Day weekend. Despite a 3,300-mile Coast Guard search, no trace of him is ever found, leaving his family without answers.

Second grader Kyron Horman goes missing from his Portland area school. Investigators initially focus on Kyron’s stepmother after uncovering an alleged murder-for-hire plot, but she has consistently denied any involvement and was never charged. Today, law enforcement is leveraging new digital evidence technology in the hopes of finally solving the case.

Liz Barraza, a 29-year-old Texas woman and a devoted member of a “Star Wars” costuming fan group, is shot four times while setting up a garage sale outside her home. A figure in disguise is captured on her doorbell’s camera carrying out the brazen daylight attack.

Accomplished distance runner Amy Wroe Bechtel disappeared while jogging in the Wyoming mountains, drawing the largest search in the state’s history. Police chase down leads involving various area men, including a convicted serial killer.

Brandy Hall, a 32-year-old mother of two and a career firefighter, vanishes after leaving the Malabar Fire Station. Days later, her truck is found submerged in a Palm Bay pond with blood inside, but Brandy is nowhere to be found. Twenty years later, police examine new leads in the case.