Unknown Tribe: Mason

Dr. Corrin Davies is excited to be offered the chance to study a new tribe. She was chosen as one out of the few anthropologists to go into the mountains of Colorado and live among them. This is a once in a lifetime opportunity for her.
Mason is tired of humans wanting to come on his land. He goes to the gate to send another research team away. He sees Corrin and knows she's his true mate. True mates are rare and he refuses to let her slip through his fingers. He will do what it takes to win her heart.
What will Corrin think when she finds out that they're not just an unknown tribe, but also an unknown species?