From Shirley Temple to the Two Coreys, each of these child actors endured hardships invisible in their onscreen lives.

After Phil Hartman's death in 1998, a heartbroken nation tried to make sense of the loss — but for Hartman's friends, warning signs had been there for years.

Chris Farley's death was caused by a "speedball" mix of cocaine and morphine, but his friends think there's more to the story.

Thelma Todd was one of early Hollywood's brightest stars — until she was found dead in 1935. Although her death was ruled a suicide, many believe she was actually murdered.

Harlequin ichthyosis, a genetic disorder that results in overly thick skin that's prone to cracking, used to mean certain death. Now, some people with the condition have lived into their 30s.

Frank Lentini, the "Three-Legged Man," went on to have a successful career thanks to his parasitic twin.

Inspired by a simple idea from female volunteers in 1917, the work of the Donut Dollies spanned decades and helped boost the morale of American soldiers during World War II and beyond.

For nearly a decade, the FBI stalked and slandered Jean Seberg until her suicide in 1979 — and all for supporting civil rights.

After his father was assassinated, Robert Todd Lincoln kept an insanity file on his mother that he later used to have her committed to an asylum.

Lonnie Johnson was born in Alabama in 1949. The odds seemed stacked against him, but the young genius worked his way to NASA and later, to multi-millions.

In an era before producers established censorship guidelines, anything went in Hollywood, including films starring hyper-sexualized toddlers pretending to be prostitutes, drunks, and disparaged veterans.