The sex scenes in this film are all simulated, except for one in which Maria Isabel Lopez takes Michael De Mesa's penis in her hand and strokes it until it becomes erect. That's one of the few hardcore scenes done by Maribel in her career.
In the scene in which Maria Isabel Lopez is murdered by sheathing a samurai sword into her private parts, a prosthetic vagina was used. Cecille Baun, a pioneer in an industry that could barely acknowledge the area of prosthetics and special makeup, recalls:
"I made a dummy out of Isabel. I copied her pubic hair. Michael De Mesa, the son of Eddie Mesa, is going to insert a samurai sword. But I asked Isabel, can I see your pubics? She said 'Yeeees!' She was a little bit drunk! 'I just want a picture that I can borrow.' So I was able to do it. Only the photo. And that scene, he inserts the sword up to here, that's what I did to Isabel. I can never forget that!"