Oath of the Vayuputras (Shiva Trilogy: Book 3)
This is the third book in the Shiva Trilogy (which includes Book 1: The Immortals of Meluha and Book 2: Secret of the Nagas).
Shiva has accepted his destiny, but it has brought him to despair.
Amish Tripathi
Books on the ancient Indus Valley people by fiction author Amish Tripathi.
Secret of the Nagas (Shiva Trilogy: Book 2)
His vengeance and the path to evil will lead him to the door of the Nagas, the serpent people. Of that he is certain. The evidence of the malevolent rise of evil is everywhere.
The Immortals of Meluha (Shiva Trilogy: Book 1)
Its 1900 BCE in what modern Indians mistakenly call the Indus Valley Civilization.