IDW, San Diego, 2011, 1^st pr thus.  ISBN 978-1-60010-886-0.  Hard cover, 152 pages.  Originally published as Locke & Key:  Keys to the Kingdom Issues #1-6.  Unread copy with upper corners lightly bumped.  Nominated for four 2011 Eisner Awards.  ‘The Locke children have grown accustomed to the myriad magical keys discovered within the ancestral family home of Keyhouse.  They have also grown accustomed to tragedy.  What they may not be prepared for is just how closely danger stalks their every move as Lucas Caravaggio, alias Zack Wells, continues his relentless quest for the key to the black door.’ (from rear cover)