Valentin Ganev

A man must survive a prison where hardened criminals battle to the death for the warden's entertainment.

A westerner named Casey, studying Ninjutsu in Japan, is asked by the Sensei to return to New York to protect the legendary Yoroi Bitsu, an armored chest that contains the weapons of the last Koga Ninja.

A man crossing into Mexico with a satchel of $2,000,000—and a bloody past—finds himself under sudden attack in the sleepy town of El Fronteras.

Since the 1960s, a disproportionate number of the population in and around Nome, Alaska, have gone missing. Despite FBI investigations, the disappearances remain a mystery. Dr. Abigail Tyler, a psychologist, may be on the verge of blowing the unsolved cases wide open when, during the course of treating her patients, she finds evidence of alien abductions.

Heavyweight Champ George "Iceman" Chambers is sent to a Russian jail on trumped-up drug charges. In order to win his freedom he must fight against the jailhouse fighting champ Uri Boyka in a battle to the death. This time he is not fighting for a title, he is fighting for his life!

Russian inmate Boyka, now severely hobbled by the knee injury suffered at the end of Undisputed 2. No longer the feared prison fighter he was, he has declined so far that he is now good only for cleaning toilets. But when a new prison fight tournament begins - an international affair, matching the best fighters from prisons around the globe, enticing them with the promise of freedom for the winner - Boyka must reclaim his dignity and fight for his position in the tournament.

In the fourth installment of the fighting franchise, Boyka is shooting for the big leagues when an accidental death in the ring makes him question everything he stands for. When he finds out the wife of the man he accidentally killed is in trouble, Boyka offers to fight in a series of impossible battles to free her from a life of servitude.