Sherlock Holmes and his colleague, Doctor Watson.
Conan Doyle was born in Edinburgh, Scotland, in 1859. He became a doctor and began to work in England. His famous hero was created in 1887, in his first book: "A Study in Scarlet".

More stories came and were published in a newspaper from 1891:more and more readers thought Sherlock Holmes was a real person!

Sherlock uses methods to investigate very similar to a teacher of Conan Doyle at University in Edinburgh: look in details at people (or bodies) and you will find clues to solve the mystery!