Antonio S and the Mystery of Theodore Guzman by Odo Hirsch

Antonio S is a boy who knows all sorts of things.
Scarrabo the Magnificent is a magician.
Professor Kettering is a doctor.
They live together at the top of a grand old house built long ago for a duke.
But who is Theodore Guzman, the secretive old man who lives downstairs?
What mysterious things does he know?
It takes someone like Antonio S to find out.

In his first book for children, Odo Hirsch has written a wonderfully warm and eccentric story about a boy who explores a secret passage that leads to the very heart of the house where the magical world of Theodore Guzman comes to life.