The "Harry Hole Series" is a collection of crime novels written by Norwegian author Jo Nesbø. The series follows the character Harry Hole, a skilled but troubled detective in the Oslo Police Department. Known for his unconventional methods and personal struggles, Hole investigates complex cases often involving murder and corruption. The series includes several titles, starting with "The Bat" and featuring popular entries like "The Snowman." Each book combines intricate plots with deep character development, making it a favorite among crime fiction enthusiasts. The series has gained international acclaim and has been translated into multiple languages.