This book is about a man that has somehow brought out an evil side of him. He is a scientist and he makes a concoction that has brought out the evil part. At first the man is able to be somewhat aware of what the other person does, but it gets worse and he looses control. He has few conscious moments and often wakes up not knowing what has happened. His friend learns about the evil side, but has no idea that both of the men are the same. As the friend learns more, he becomes closer and closer to the horrible truth. Then the evil side kills a man and he hides by becoming the good man and hiding in his house. The friend thinks the evil man has killed the good one, but he soon finds out something is very strange about the whole situation. Then the friend receives a letter from the man and he gets the supplies asked in the letter. A man meets the friend and makes a concoction. Then he drinks it and all of a sudden the man turns into his friend that seems to have been revived from the evil side. The whole story is a mystery as the friend finds more clues.

The thing I liked was how the story was set up and how the whole thing was a mystery so that it kept you interested in finding out the answer. It got confusing at times and I had to re-read parts to find out the clues and truly understand it. "pale and shaken, and half fainting, and groping before him with his hands, like a man restored from death-there stood Henry Jekyll! " The good man had only a little power left and he needed the concoction to make himself regular again. The person that his friend saw was a mixture of evil and good with the good barely holding out. After that, the friend was told everything and he listened in shock. This part didn't come until near the end so that it was a twist in the story that is unexpected.

The book may have been good for its story line, but parts of the story got to be repetitive and it got to the point where it was boring and it was hard to keep going. The end really disappointed me, because the story was pretty decent and then the end came and it was bad. The end was supposed to be a letter written from the last words of the good man that was losing his power to stay in control. The letter was at least twenty pages and was filled with confusing sentences and the same information being repeated over and over. It got tiring and boring very quickly, so that I struggled to keep reading. I finally made it through and the end of the letter said that the good man was saying he was going to end his miserable life. "Here, then, as I lay down the pen, and proceed to seal up my confession, I bring the life of that unhappy Henry Jekyll to an end. That ending would have been good if it wasn't after the most boring part in the book.

My favorite part of the book was when the friend and the butler of the good man break into the study to get the materials wanted by the man. It was my favorite part because lots of clues start to come out and it's the point right before finding out the truth of the evil and good man. My least favorite part is the end when the same information is repeated and the words are so confusing that it is very boring. Overall the book has a good way of keeping the reader suspenseful, but it also does the opposite with the repeated parts and the story may seem a little over stretched.