Truly pathetic mess cobbled together by Jerry Warren of footage from a Mexican movie (La casa del terror) with scenes featuring Lon Chaney Jr. (who never speaks any dialogue; I'm not even sure he was the performer under the werewolf make-up in the many of the monster's attack scenes) into an incoherent narrative. Warren doesn't even try and I have contempt for him in this regard. We get the Chaney werewolf transformation and there are a few nasty attacks where the werewolf mauls victims, but that's it. There's something to do with a scientific expedition in The Great Pyramid at the North Yucatan Border (we are also assaulted—erm, I mean treated—to a tribal ceremony once performed by the civilization that once lived in this region of the world, and it goes on forever it seems). Two beings are discovered in the pyramid, a man (Chaney) who is afflicted with lycanthropy (he just turns whenever the film decides) and this zombie mummy from the past civilization I just mentioned. Both beings become associated with scientists who use a wax museum as a front, their laboratory hidden behind a wall that opens. There are two cops (Warren probably hired off the street for a few hours) on the lookout for dangerous fiends terrorizing whatever city this film is supposed to be set in. There are experiments using machinery with knobs and gyros that continue for minutes as the scientists look pleased at their progress (I'm not sure what they are doing exactly, but about five minutes in I gave up caring…) and one opening protracted sequence where a female test subject is put under hypnosis and recalls a past life as the Yucatan priestess, her story inspiring the pyramid expedition. I would like to see a dubbed or subtitled version of "La casa del terror" whose guts were extracted for this abomination just out of curiosity…maybe it might actually have a coherent storyline a bit easier to follow. Milking the iconic status of an actor who had fallen on such hard times he was stuck in low budget stinkers just to make ends meet and support his alcoholism, Warren knows no shame and can't even bother to honor Chaney with a decent use of the footage he took from elsewhere. This might be entertainment for those who cherish bad cinema, but I found this waste of time damn near impossible to get through without feeling pity for Chaney Jr. because you have to recognize a star's career was in the toilet. Thank goodness for Spider Baby, one last great movie for Chaney—I just wish this was his last film instead of that f'n Adamson picture.

Jerry Warren hatchet job took a Mexican comedy film where Lon Chaney played a werewolf for the last time and added scenes from Attack of the Aztec Mummy and new scenes. Mind numbingly boring thanks to Warren's tinkering (remember the Chaney footage was part of a comedy), the film involves using past life regression to find mummies in an Aztec pyramid, one of which is Chaney, the other is an Aztec mummy thats moving about. The Chaney mummy is revived and goes on the rampage because he's really a werewolf. Incredibly boring film is half over (This runs about an hour) before the mummies show up, and from there its nothing but disjointed scenes of the werewolf and Aztec mummy running about with little real dialog (most of it is either voice overs or clearly filmed later by other people footage of TV news reports). Unless you really need to see all of Chaney's films complete and in in all their cuts you should watch the trailer and move on.

I'm sorry, but I have a totally different opinion on this movie - if you can name it a "movie". If you want to see Lon Chaney Jr in his last Wolf Man theatrical appearance, it's better for you to catch the original version of this film, LA CASA DEL TERROR, Mexico 1959, directed by Gilberto Martinez Solares. As usual, Mr. Warren totally destroyed an excellent film in cutting about one-third, mixing it with elements of a Rafael Portillo mummy film totally unrelated with the other, and (always as usual) putting his name on a film made by others. Not only the original LA CASA DEL TERROR is an excellent film, but the comic elements (with Tin Tan) are well integrated with the horror segments, as it was the case in ABBOTT & COSTELLO MEET FRANKENSTEIN, also with Chaney...

Can a movie, that actually consists scenes from two mexican monsterthrillers plus additional scenes from US for commersial interests, be successful? - Yes! This is a dreamlike and incoherently edited oddity that tells a story of a centralamerican mummy found at the excur- sions of a pyramid. Also there is a mad scientist who in his experiments with revivification, succeeds in waking the mummy. And there´s a thunderstorm! The mummy is transformed into a werewolf played by Lon Chaney jnr! Its wild, suspenseful, trancendental, poetic in its "silents" looks and pace and there is a musical number of exotica style too, with an Yma Sumaclike vocalist in a "flashback" Aztec ritual scene! I was overwhelmed of the total impact of this movie as seen through the eyes of someone who value uniqueness and improvised quality in lowbudgetfantasy that really works as avantgarde poetry. The images and atmosphere of Ancient Civilisation, Pyramids, detectiveworks, a scary rotten walking mummy, a terrifying werewolf,terrified womens faces and all these mysterios cuts between scenes from one film to another creates a nightmare with no other logic than the dream´s own. I recommend this for all who has a vivid imagination and for all of you who believe that insanity can be genial!