"The Trials of Apollo: The Tyrant's Tomb" by Rick Riordan is the fourth book in the series. It is written in English and published by Apollo Books. The book follows the adventures of Apollo as he navigates through various challenges in ancient Greece. With a height of 8 inches, a length of 6 inches, and a weight of 25 ounces, this 439-page book is a must-read for fans of the series."