Hercules, Prisoner of Evil (Italian: Ursus il terrore dei Kirghisi, lit.

'Ursus, Terror of the Kirghiz') is a 1964 Italian peplum film directed by Anthony Dawson and an uncredited Ruggero Deodato.

Deodato,credited ans assistant director, replaced Margheriti who was busy with the completion of the film The Fall of Rome.

[4] The mighty Ursus is given a potion to drink that transforms him on certain nights into a murderous werewolf.

Ursus kills several innocent people in the forest before realizing that he himself is the creature the local villagers are seeking to destroy.