Originally from Sweden, Luthman has studied and worked in the United States since the early 1990s, receiving her doctorate from Emory University in Atlanta. Her work focuses on the Tudor and Stuart eras, specifically on issues of love, sex, and marriage. Her previous publications include Love, Lust and License in Early Modern England: Illicit Sex and the Nobility (2008), published under the name Johanna Rickman. Her most recent publication is Love, Madness, and Scandal. She lives in Atlanta with her husband, Dr. Marko Maunula.