Eli Arnold and the Keys to Forever Book Five: Into the Storm (Volume 5)

Abandoned in Valhalla, Eli, Brady, and Livia must escape from the gathering Berserker army and pursue their ally-turned-enemy, Nikola Tesla, across North America. The Atlantean scientist now possesses Eli's Keys and the desire to reunite them for his own sinister purposes. Enemies close from all sides. In a land of magic and mystery, the natural and the supernatural collide. Eli struggles to adapt to his brother's return, finding that some promises are more difficult to keep than others. Will Eli track down Tesla? Will he be able to recover the Keys taken from him? To stop a mad man, he'll be forced to solve a famous riddle and rush headlong into the storm.