Key

As soon as he said this reason, Arren frowned as he furrowed his brows. He held the key? What key? He couldn't understand, and he never remembered that he held a key for something. 

Other than him, everyone more or less had a clue about it, even Spade, who wasn't surprised by this answer and yet was still clueless about what it meant. 

Arren lifted his gaze and met Spade's eyes almost instantly as the alpha also looked at him. They both looked at each other, gripping the other's hand, seemingly to assure each other. 

They returned their attention to Curt; they didn't need to say anything more as the alpha had already started to speak once more.