A highly rated series by K. Piet are the contemporary erotica Catalyst books, featuring spanking, abuse, dark and bdsm tropes. Another highly rated series are the paranormal Immortal Symphony: Overture novels, tagged as fantasy, menage and erotica. The highest rated books by K. Piet are Love is Always Write: Volume One (Don't Read in the Closet Events), Love Is Always Write: Volume Five (Don't Read in the Closet Events), Daughters of Artemis and Overture: A Meeting of Fate. Her latest book is Sweethearts and Seduction which was published in 2014.
If you want to start reading K. Piet's oeuvre, why not try Catalyst (Catalyst #1) and Overture: A Meeting of Fate (Immortal Symphony: Overture #1).