This is the first book in The Spiderwick Chronicles, a series of children's fantasy books by American authors Tony DiTerlizzi and Holly Black.
The books chronicle the adventures of the Grace children, twins Simon and Jared and their older sister Mallory, after they move into the decrepit Spiderwick Estate. In the first book, "The Field Guide", they discover a magical book in a hidden library which opens up a world of faeries they never knew existed...
Publisher - Ast. Hardcover. 124 pages. With black and white illustrations.