Zeus the Sleuth is a series of stories about a pony who works for the ESS (Equestrian Secret Service). In this first book you get to meet the main characters as Zeus moves to a new home with a new family in Cheshire, England. No one knows about Zeus's background as an agent, but he soon finds himself using his skills to solve some mysteries on and around the yard. You get a feeling for what's to come and get an idea of some of the other animals and humans personalities.