Who Let the Gods Out? is a highly popular, humorous children's fantasy novel. The protagonist is 12-year-old Elliot Hooper, who lives with his mother in a chaotic, rural setting. His life changes when he accidentally crashes a car into a shed and discovers Virgo, a Zodiac goddess who has fallen to Earth. Elliot soon discovers that the Greek gods are living in retirement. The central plot involves Elliot and Virgo trying to save the world from the evil Thanatos (Death), who is trying to escape. The book is a funny, fast-paced adventure that blends mythology with contemporary issues, focusing on themes of courage and family.