The Savage Fortress, Hardcover

After three weeks of vacation, Ash Mistry is ready to leave the heat and dust of India behind him. Then he discovers a gleaming gold arrowhead hidden in the sands---a weapon used to defeat evil King Ravana in legend.
At least, Ash is pretty sure it's only a legend . . .
But when Lord Alexander Savage comes after Ash, the legends are suddenly way too real. Savage commands an army of monstrous shapechangers called rakshasas, who want only to seize the arrowhead and restore Ravana to power. As they hunt Ash through magnificent fortresses and brutal deserts, he must learn to work with a powerful rakshasa girl named Parvati, and find the strength within himself to fight on no matter what. Because this isn't just a battle to stop the end of the world. It's a battle to stop the end of reality as we know it.
No pressure.