This is a great horror movie. It is also a very good musical. This movie as great acting. Great songs. Great singing. It also has great special effects. This is a very scary movie. It very different. There are not to many musicals based on horror novels. There should be more musicals based on horror stories. It would make them more interesting. Doctor Jekyll finds out that man has two souls. And good soul and an evil soul. He invents a formula that brings out his evil side. It takes him over. This movies is very intense. This is Kirk Douglas's best movie. Kirk Douglas is a great actor. He is also a great singer. Susan George is a great actress. This movie is a must see.