Science gone mad

Christopher Rainbow was a thirty years old man. He has got brown hair and blue eyes. He was quite tall. He was very curious and athletic.
He has got the scientific degree with the best honnors. He studied extensively physics and chemistry with many passion. He loved this subjects. He was crazy about experiments .
Later, Christopher became a laboratory assistant. But he leads a second life. In secret, he was a researcher and he had already invent some objects.
But, he was not glad , he wanted to create something, an object, a potion, a drug in order to be able to do what he wanted with impunity. He wanted to be free. He wanted to can accomplish his desires without being seen.
After many years of hard work, he finally found a recipe to create a potion to become invisible . He also made an other potion to become visible again.
He tested his inventions on mouses. It worked perfectly.
The scientist hastened to drank the filter. Instantly, Christopher became invisible, he turn to the mirror and didn't see his reflection. He also drank the second drug, and became visible again. It was perfect. It was the most beautiful day of his life.
Christopher used this potion many times, more and more to satisfy all his desires.
He used it to become very rich. He had got a very good way to earn money quickly.
Christopher drink his drug for becoming invisible. Then, he entered into houses and banks. He wasn't detected by surveillance cameras He had stolen everything as he can and he gone away like if nothing had happened .Then, he sold everything that he had stolen. He repeated this way several times and earned a lot of money.
With this potion, he also could go anywhere without restriction. He was be able to visit dangerous places and forbidden locations.
He was very happy and joyful.
But, one day, there were a problem. Christopher's hand stayed invisible even when he took the potion to become visible. It was very worrying but the man don't worry