La noche del terror ciego

Some distributors in the US re-cut and released this film with the title "Revenge from Planet Ape" in an effort to capitalize on the success of the El planeta de los simios (1968). A prologue was added in this cut version to make a connection--though dubious--between the two films. The prologue explains that 3000 years ago a simian civilization of super-intelligent apes struggled with man to gain control of the planet. In the end, man conquered ape after a brutal battle that saw him destroy the ape, his culture and society. After this battle man tortured and killed all the ape prisoners by piercing their eyes with red-hot pokers. One of the prisoners, who was also the leader of the apes, vowed they would return from the dead to avenge man's brutality" at a point in time before man destroyed Earth himself. This alternate prologue is available for viewing on the Blue-Underground DVD release.

During the films intro titles, the camera is looking around the "abandoned" ruins of the Templars monastery. In one shot, a van with a ladder strapped to its roof-rack can be seen going across a bridge in the background, at the top of the picture.

A dubbed English language version was made for US drive in theaters during the 70's entitled "The Blind Dead". This version was quite heavily edited for an "PG" rating, which heavily toned down the bloodier scenes and removed the rape sequence in the graveyard in its entirety. It also moved a flashback sequence which had originally occurred about 50mins into the film, showing the templars sacrificing a young maiden, to the beginning of the film. This version is included on the US DVD from Blue Underground along with the uncut Spanish language version.

Edited into Cent une tueries de zombies (2012)