Bonjour !
a. Sir Conan Doyle was a Scottish doctor and writer. He is famous for his detective stories about Sherlock Holmes who continues to fascinate readers today.
b. Sherlock Holmes first appeared in A Study in Scarlet which was published in 1887.
c. In A Study in Scarlet Sherlock Holmes meets Dr Watson who is home from war in Afghanistan.
d. In The Final Problem, Sherlock Holmes comes face to face with Moriarty who is his arch-enemy.
e. Sir Conan Doyle wrote 56 short stories and four novels about Sherlock Holmes, including "The Hounds of the Baskervilles" which is his most famous novel.
J'espère t'avoir aidé. Bon courage !