"The Avenging Cycle" is a series of fantasy novels written by Kristen Britain. The story follows the journey of a young woman named Karigan G'ladheon, who becomes a Green Rider, a member of an elite group of magical messengers. The series is set in the fictional land of Sacoridia and explores themes of duty, friendship, and the struggle between good and evil. Throughout the series, Karigan faces various challenges, including dark forces and political intrigue. The novels blend elements of adventure, magic, and personal growth, as Karigan learns to harness her abilities and confront her destiny. The series has garnered a dedicated fanbase and is known for its rich world-building and character development.