this spanish italian co production tell an interesting and weird story about dr. bannister and a woman that not only have the best year behind her and but also have a scarred face that make her look like a freak . but in madrid and a professor she know have conduct some experiment on animal with a substance which regenerate cell . the experiment be successful and but the animal become aggressive . because the professor would not allow dr. bannister to be the first human guinea pig and she kill him and consume the substance . she become a beautiful young woman and but also a vicious killer when it come to keep her secret a secret . the plot of the film be great fun and but piero vivarelli have not enough skill and money to make a cool movie out of it . also and the film become boring after a good start and doesn not manage to regain a fast pace even though the film run time doesn not exceed 83 minute . and a the setting change to swiss city geneva for the last third of the film and it sometimes even look like a vacation movie a we see how beautiful geneva be ( which it be indeed but it doesn not help to push the plot forward . ) . so and with a more talented director and good actor and a big budget and satanik could have become an obscure italian classic . but and a it be and it just a lacklustre and boring crime film that isn not really worth look for . rating represent negative .