A fifteen year old young man regains consciousness in an alley in London, in 1873. He?s got a gash on his forehead and can?t remember anything about his past. With a blank mind, he will have to solve an insoluble problem: an assassin has threatened to kill multimillionaire Gideon K. Crispin. Crispin locks up himself in the safest room in his house, with a policeman guarding the door. In spite of all precautions, someone will manage to enter without being seen, shoot at him and disappear. 
Also, in this book you will find: 
- A short biography of Marie Curie. 
- The hidden forces of the atoms. 
- A demonstration of how senses can confuse us.