Jade's appears to be possessed by a dark force.

The Jade Calhoun series is set in a supernatural version of New Orleans and currently consists of 10 primary books: Witches of Bourbon Street | Jade Calhoun Series

In this installment, Jade's mentor, Bea, falls gravely ill, leaving Jade as the only one capable of helping. Having shunned the magical community for a decade, Jade is forced to quickly learn how to harness her powers as a white witch. Her mission becomes increasingly complex as:

The resident , disappearing with Jade's boyfriend, Kane.