<i>A Hermit's Secret</i> tells the story of a lifelong friendship that forms between a mysterious hermit and a high school boy.

The hermit, who appears in a rural community of southern Greece with only a guitar, is a total enigma to the local inhabitants. No one knows who he is, or where he has come from. Even his name is shrouded in mystery. He appears to be well-educated and behaves as if he is of noble birth; because he is always instrumental in resolving disputes among local people, he acquires the name Nestor. He befriends a local high school boy, Theovulos-Theo for short-who wants to know the real truth about the world around him.

Much later, as an adult living in Chicago, Theo receives a message from Nestor via his cousin in Greece that he is close to death and wants to see Theo before his life ends. Within three days, Theo is on his way to Greece and his final meeting with Nestor, curious but determined. His old friend has summoned Theo to his deathbed not only for comfort, but to involve him in a mystery that will soon reveal the old hermit's secrets and change Theo's life forever.