Induction - The Sid & Sin Series, #1

They weren't supposed to exist. Sidonie & Sinclair Boudreau were the offspring of a witch and a shifter. Such pairings usually resulted in death. Sid & Sin had not only survived, but thrived, and managed to sidestep the family legacy of supernatural policing. The disappearance of their parents changed everything. A cryptic message, an ancient prophecy, and a mystery to uncover in order to bring their parents home puts the twins in the crosshairs of an enemy they didn't know existed.
What would you do to save those you loved?