Primal Instinct is a series of paranormal romance novels by American author Rhyannon Byrd. The series follows the Buchanan brothers in world where supernatural beings not only exist, but there is also a hidden darkness inside the brothers – whether they choose to believe it or not.
Rhyannon Byrd is an American author of romance novels, including contemporary, paranormal and erotic. She is the author of multiple series, including her Bloodrunners and Primal Instinct series. In her spare time, Rhyannon enjoys travelling, reading and watching football. She lives in the Southwest with her husband and their two children.