What is the fourth novel in the cycle of books focused  on the adventures of a teenage boy named Eragon?
Inheritance (Paolini novel) Inheritance is a 2011 novel written by American author Christopher Paolini. It is the fourth novel in the Inheritance Cycle.
Serpent Mage Serpent Mage is the fourth book in The Death Gate Cycle series written by Margaret Weis and Tracy Hickman. It was released in 1992.