john-daniel

The gang joins Callie at Rosegrave with hopes of saving Frank, but they’ll require the help of an old foe and The Power of The Eye.

As The Core’s true purpose is revealed, the Hardy Boys and their friends must band together to save themselves, and the world, from an unheard-of technology that could forever change…

When the gang learns the location of George Estabrook’s hidden Codexes, they must enlist the help of an unlikely ally to retrieve them before anyone else.

After a shocking blow, the gang must divide and conquer to determine the identity of Deep Voice and get The Core back.