P.C. Cast 
Time Raiders: The Avenger 

Unleash the untamed passions of the underworld in these deliciously wicked tales of paranormal romance."You are about to enter a place of power, a place beyond imagining. "Alex thought communicating with the dead was the worst of her troubles. She couldn’t have been more wrong! She’s just been sent to 60 AD by a secret army unit to recover missing pieces of a medallion that could change the world. Alex must use her gifts to entice Druid Caradoc into helping her.Yet soon she’s torn between duty and the man who’s been haunting her dreams. Returning to the present is the noble thing to do, but her heart tells her to stay in this enticing new world of goddesses and warriors.TIME RAIDERS Only they can cross the boundaries of time; only they have the power to save humanity.