Can an unknown power match up against the god of hell? In her new life, Gabrielle is living in one of the darkest times in American history: running a safe house for the Underground Railroad. But with threats around every corner, Gabrielle finds it difficult to focus on her goal: take down Arawn. Arawn is done playing games. With every soul, his power grows. And desperation makes him even more dangerous. When the god of hell discovers Gabrielle's weakness he will stop at nothing to take her down. Gabrielle is going to have to use every ounce of her power if she's going to survive.

A world beneath our world.An army of mechanical monsters.A war to end all wars.When Adalwolf Stein and Arija Rapp discover a mechanical world hidden deep within the earth, the result is life changing. Webley and the creators of The World Machine work to keep the Earth turning. But when Arija and Adalwolf discover a growing conflict that will destroy the Earth, they find themselves forced to fight. Will they be able to stop the war in time or will they regret ever having set foot in The World Machine?