What a waste of my time!!!

That was an excellent one.

Good start, but then it gets ruined

All of these films share one commonality, that being a kind of emotional center that humanizes a cast of monsters.

Dr. Scott has created a miracle serum. When he's given it to animals with horrible injuries or on the verge of death, they quickly recover and are healthy. So, they want to try it out on a human...but ethically the only way they could do this is to give it to a terminal patient with no hope for recovery. Kyra (Mari Blanchard) is dying of advanced tuberculosis and she very willingly agrees to be the guinea pig. Amazingly, she soon completely recovers. However, there are unforeseen complications--she is now virtually indestructible AND she's evil!Soon, Kyra is off doing rotten things...and with seeming impunity. In a really, really neat scene for a 1950s film, she bashes some poor guy over the head while stealing something. When the police are searching for her, she hides out in a dressing room and wills her hair color to change...and it does on camera! Then, she just walks off...as they're looking for a brunette and she's now a platinum blonde! And, she seems to exude sex appeal that turn men into puppets in her hands! What's next for this budding sociopath with X-Men powers?!Overall, this is a highly entertaining film that doesn't always make sense. Why didn't the doctors go to the police? This never made complete sense.

As Bill Warren points out elsewhere, director Kurt Neumann had a lot of enthusiasm for the potential of science fiction movies, but he didn't quite seem to have the talents (or the budgets) to make consistently good ones. He seems to have plenty of intelligence - hence adopting a story with the fascinating idea of seeing what would happen if a human being were injected with a serum that enables her to "adapt" to any threat or environment - but he didn't seem to be able to create scenes without tons of expository dialog, or patch the enormous plot holes in the screenplays.She Devil...it has its moments. As a friend said, someone ought to give Albert Dekker the Purple Heart Actor's awards for his valiant attempts to soldier on as he is forced to deliver line after line of clunky dialog in scenes that are going nowhere. And there are some good framing shots and set ups here and there - at times the actress who plays the woman test subject does manage to project a chilly, barely human glamour that makes you believe that she could take a man for everything and kill him once she was bored with him.But the screen play asks the viewer to believe that a millionaire widow wouldn't have a retinue of courtiers and employees and bodyguards who would follow her everywhere, and who wouldn't make a major fuss when she went missing after she visits the two men in the world who created her and know her secret. And it wastes a lot of time foreshadowing a leopards presence in the lab without ever doing anything interesting.Anyway...this what happens when you try to get by with one special effect (the woman seems to be able to change her hair color at will) and pretend you've created a movie about "ideas"...when you don't know how to do anything really interesting with that idea.Still way better than some of its contemporaries (dreck like "Voodoo Woman" make this look like Scorcese) and worth seeing once if you are fascinated by 50's scifi.

I too recall this picture when I saw it in a movie theater in Ashtabula, Ohio in the 50's. What I found fascinating about it was the Dr. who was in love with this patient and how difficult it was for him to finally make the decision to give her a shot of the anti-serum to stop the violence. I remember how she willed herself to change and become a blonde when she was in the changing room, how the Dr. stole some hair from her hair brush so he could have it analyzed and when she is given the final anti-serum and reverts back to the sweet brunette he loved. Even as a 8 year old,it touched me and made it quite memorable, even in these times. Would love to see it re-done as well. Also, does anyone know if there is any way to get a VHS of this picture?

I remember seeing this movie when I was a kid on the Sunday afternoon TV matinee. In the film, a terminally-ill woman will die unless an experimental drug is administered by the scientist who developed the serum, if I remember correctly, from some type of insect or spider (or was it some deadly plant?). Her life is saved, but she has developed extraordinary methods of survival and becomes seemingly indestructible. What can the scientist do to solve this situation? In many ways, this film is typical of the 50's "horror" genre as seen in its low-budget, B-list tier of performers and the opinion that a man can save a woman, but who can save a woman from herself (especially one who's developed into some kind of monster)? As a kid, I remember being really impressed with a scene where, to avoid being caught, the woman (having developed those incredible survival techniques), mentally changes her hair color from brunette to platinum blonde (much like a chameleon). I remember thinking that would be really cool to be able to do that! So while this film is no awards-contender, it's a memorable quasi-horror title from the 50's!