Travis Clark:

“The Witcher,“ based on the fantasy novel series by the Polish author Andrzej Sapkowski, is the most in-demand TV series in the world across all platforms, according to the data company Parrot Analytics. The company’s ranking is based on “demand expressions,“ its globally standardized TV measurement unit to reflect the desire, engagement, and viewership of a series, weighted by importance.

If you think the TV show is good, you have to read the books — they’re actually much (much!) better. Please note that some of the stories and threads from the books have been altered for the TV show — the originals not only make more sense, but the characters (Yennefer and Ciri especially) are better developed.