Karen Chance is an American novelist known for her best-selling series set in the Cassandra Palmer universe. She was born and raised in Orlando, Florida, and has lived in various places including France, Great Britain, Hong Kong, and New Orleans. Before becoming a full-time author in 2008, she taught history, which has undeniably influenced the time-travel elements in her works. Chance currently resides in Florida.

Her work has been featured on the New York Times and USA Today bestseller lists. Her notable series include the Cassandra Palmer series featuring the protagonist Cassie Palmer, a ghost whisperer and clairvoyant who navigates her role as the Pythia, the chief seer of the supernatural world. Readers follow Cassie's growth and exploration within the supernatural community as she discovers her identity and powers.

The Midnight's Daughter series is a spin-off from the Cassandra Palmer series, focusing on Dorina Basarab, a dhampir with a complex personality and a mysterious past. Both series intertwine, providing fans with a comprehensive view of Chance’s richly crafted universe.