Karen Marie Moning is best known for her urban fantasy and paranormal romance novels. Her most popular series is the "Fever" series, which includes books such as "Darkfever," "Bloodfever," and "Faefever." This series delves into the intriguing world of the Fae and has captivated a wide audience with its complex plot and dynamic characters. Additionally, Moning has written the "Highlander" series, blending elements of fantasy with historical romance, set against the backdrop of Scotland.