"Tarzan and the Jewels of Opar" is an adventure novel by Edgar Rice Burroughs. It's the fifth book in his series about Tarzan. In this story, Tarzan returns to the lost city of Opar to replenish his wealth after a financial disaster. However, a wicked high priestess and her follower are plotting against him. The book also features a subplot about Tarzan's wife Jane, who gets kidnapped, leading to a series of dangerous and thrilling events. The story focuses on courage, love and survival in the wild.