Cottonmouth，静水深流，毒蛇出没需小心。老影院体验区三十秒

　　Set in 1895, the film follows friends Ed and Frank who become brutal enemies in Oklahoma frontier territory when a rivalry develops over a woman who is set to inherit a prominent saloon. After a bounty hunter makes Ed disappear to a tortuous prison run by a sinister warden, he must learn the ways of an outlaw from a prison-mate to escape and exact his revenge.