Strange case of Dr Jekyll and Mr Hyde. Robert Louis Stevenson. 1990.

Everyone has a dark side

Dr Jekyll has discover the ultimate drug. A chemical that can turn him into someone else. Suddenly, he can unleash his deepest cruelties in the guise of the sinister Hyde. Transforming himself at will, he roams the streets of fog-bound London as his monstrous alter ego. 

It seems he is a master of his fate.

It seems he is in complete control. 

But soon he will discover that his double life comes at a hideous price..