How many pages does A Kestrel for a Knave have?

"A Kestrel for a Knave" is not a book title. It's possible you're thinking of "Kestrel for a Knave," which is a novel by Barry Hines.

"Kestrel for a Knave" by Barry Hines has 204 pages in its original paperback edition.

Please clarify if you were thinking of a different book.