I've watched The Witcher TV series first, and since my wife wanted to watch it again ahead of season 2 it was high time to read the books.
So Sword of Destiny is the second book in The Witcher Saga, but dates before The Last Wish. Many of the same characters are encountered as are many new monsters, one being a doppler (great name), which was fun to read!
Baptism of Fire is the fifth book in the Witcher series by Andrzej Sapkowski. A big fan of the series, I've enjoyed the previous novels and reviewed them here on Booknest. For those unfamiliar with the series, it follows monster-hunter Geralt of Rivia awith his adoptive child Ciri as they struggle to make their way through a corrupt world where the nobility is selfish, the peasantry is uneducated, and war is horrific.