Five doctors on a wilderness outing are stalked by disfigured, crazed killers.

Five doctors on a wilderness outing are stalked by disfigured, crazed killers.

Five doctors on a wilderness outing are stalked by disfigured, crazed killers.

Five doctors on a wilderness outing are stalked by disfigured, crazed killers.

An American family on holiday in Africa becomes lost in a game reserve and stalked by lions.

An alien creature stalks human prey.

In Arizona in the late 1800s, infamous outlaw Ben Wade and his vicious gang of thieves and murderers have plagued the Southern Railroad. When Wade is captured, Civil War veteran Dan Evans, struggling to survive on his drought-plagued ranch, volunteers to deliver him alive to the "3:10 to Yuma", a train that will take the killer to trial.

In Arizona in the late 1800s, infamous outlaw Ben Wade and his vicious gang of thieves and murderers have plagued the Southern Railroad. When Wade is captured, Civil War veteran Dan Evans, struggling to survive on his drought-plagued ranch, volunteers to deliver him alive to the "3:10 to Yuma", a train that will take the killer to trial.

In Arizona in the late 1800s, infamous outlaw Ben Wade and his vicious gang of thieves and murderers have plagued the Southern Railroad. When Wade is captured, Civil War veteran Dan Evans, struggling to survive on his drought-plagued ranch, volunteers to deliver him alive to the "3:10 to Yuma", a train that will take the killer to trial.

Backcountry guide and explorer Greg Aiello brings attention and analysis to viral videos documenting some of mother nature's unbelievable occurrences, from natural disasters to animal attacks.