The history of "Frankenstein" in Mexican cinema dates back to the late 1950s, although a reasonable facsimile of the monster (in its Universal Pictures incarnation) can be glimpsed as early as Asesinato en los estudios (Murder in the Movie Studios, 194), as part of a "film within a film." Frankenstein's monster clones show up in the comedies El castillo de los monstruos (The Castle of the Monsters, 1957) and Frankenstein, el Vampiro, y compañía (Frankenstein, the Vampire, and Company, 1961--an uncredited remake of Abbott and Costello Meet Frankenstein). Other Mexican films which borrowed the Frankenstein name and/or concept include El monstruo resucitado (The Resurrected Monster, 1953--ugly scientist, handsome monster!), Orlak, el infierno de Frankenstein (Orlak: the Hell of Frankenstein, 1960--Dr. Frankenstein creates a robot that looks like Joaquín Cordero until its face melts!), and El arma secreta (The Secret Weapon, 1992--a murdered policeman's brain is placed in a reconstructed body by Víctor Frankenstein). Santo and Blue Demon vs. Dr. Frankenstein is a slick and entertaining entry in the Santo series, the titular mad scientist's monstrous creation is rather weird, (basically, a muscular black guy with a faint scar around his skull), particularly when compared with the two monsters in Santo contra la hija de Frankestein (Santo vs. Frankenstein's Daughter, 1971). Aficionados of Mexican fantasy films may experience deja vu as the conclusion of Santo and Blue Demon vs. Dr. Frankenstein unreels, since scripter Alfredo Salazar had already used an identical setup in Las luchadoras contra el médico asesino (The Wrestling Women vs. the Killer Doctor, aka Doctor of Doom, 1962) and Las luchadoras contra el robot asesino (The Wrestling Women vs. the Killer Robot, 1968). Santo and Blue Demon vs. Dr. Frankenstein also borrows plot elements from Santo contra la hija de Frankestein--both movies feature an aged mad scientist and assistants who use a youth serum to appear young, want Santo for an experiment, kidnap a female acquaintance of Santo to make him cooperate, have a monstruous henchman, etc. Santo and Blue Demon vs. Dr. Frankenstein is a very satisfactory film in the horror aspects of creating monsters, although the lighting and set decor are a little too bright and colorful for the subject matter. Director Miguel M. Delgado tries for much "horror" atmosphere after the opening sequences, which are at the same time creepy and unintentionally funny. The action scenes are undercut by some jaunty and creepy xylophone music, while the rest of the movie is scored very sparingly. The production values are quite good--if not lavish--reflecting the facilities of the Churubusco studios and the skill of the technicians employed there. Recommended! and great companion piece to "Santo & Blue Demon Vs. Dr. Frankenstein's Daughter". Starring Santo and Blue Demon, Jorge Russek, and Sasha Montenegro, Uncut Spanish Version with English Subtitles, plus Bonus Features. 1973 Color 95 Minutes on DVD-R.