Which writer is best known for his "Witcher" book series?

Andrzej Sapkowski (born 21 June 1948) is a Polish fantasy writer. He is best known for his book series, The Witcher. His books have been translated into about 20 languages. He started his literary career as a translator, in particular, of science fiction. He says he wrote his first short story, "The Witcher" on a whim, in order to enter a contest by Polish science fiction and fantasy magazine "Fantastyka". In an interview he said that being a businessman at the time and thus familiar with marketing, he knew how to sell, and indeed, he won the 3rd prize.

The main character of "The Witcher" is Geralt of Rivia, a monster hunter trained for this since childhood. Geralt exists in a morally ambiguous universe, yet manages to maintain his own coherent code of ethics. At the same time cynical and noble, Geralt has been compared to Raymond Chandler's signature character Philip Marlowe. The world in which these adventures take place is heavily influenced by Slavic mythology.