From the liner notes

A benevolent witch (Isabela Corona) enchants a magic mirror to protect her adopted daughter Elena (Dina de Marco) from her cruel husband (Armando Calvo). When the incantation fails and the girl is murdered, the witch vows revenge using every unholy principle of the supernatural that she can conjure. An unforgettable foray into black magic, high spookery and dazzling storytelling, CasaNegra is proud to present The Witch’s Mirror restored and re-mastered for the first time on DVD in a brand new transfer – including the blasphemous resurrection of the slain Elena!