jekyl and mrs hide

I have an idea, which I saw in a film dr Jekyll Mrs Hyde. its the story where dr Jekyll is aroused and touching himself, then he feels his other alter ego taking over and he changes from Jekyll to Mrs hide, she then sees herself and slowly embraces her new body, touching caressing, and playing with it. then Jekyll and hide fight within themselves as they see each other and want there own sexual pleasures released.
I wonder if anyone fancies taking up this to write a story, I think it has possibilities.

Sounds like a good story. could turn into a novel