Deadline: Crime with Tamron Hall

After he clashes with co-workers, Tom Monfils mysteriously disappears on the job at a Green Bay, Wis., paper mill; when it begins to look like Monfils is the victim of murder, no one talks to detectives in what appears to be a conspiracy of silence.

A mother of four goes missing right before testifying against her abusive boyfriend.

After a young mother goes missing, police suspect she may be taking a break somewhere with a new beau, while her family fears the worst.

While nursing a broken heart, a graduate student is swept off her feet by someone new, then she comes to realize nothing is quite what it appears to be.

A string of late-night sexual assaults in Phoenix is investigated.

The 1995 disappearance of three members of a wealthy Taiwanese family living in Virginia is investigated.

A woman dedicates her life to finding the person who kidnapped and murdered her daughter in 1981.

After 19-year-old Jamey Walker is kidnapped and murdered in 1981, her mother, Eleanor, dedicates the rest of her life to finding the killer.

After 12-year-old Courtney LeBlanc is kidnapped from her home, her family fears she's fallen prey to a serial killer, but investigators enlist the help of the FBI, and their search brings to light a predator hiding in plain sight.

Just steps from her home, a 15-year-old girl is kidnapped, assaulted and left for dead in Denver's South Platte River.