Hardcover.
Featuring story art by Joe Querio, Piotr Kowalski, Max Bertolini, with a bonus sketchbook section and additional art by Dave Johnson (100 Bullets), Dan Panosian (Slots), Stan Sakai (Usagi Yojimbo), Duncan Fegredo (MPH), Simon Bisley (Lobo), and a cover by Mike Mignola (Hellboy).
Collects issues #1-#5 of the Witcher comic series House of Glass, Fox Children, Curse of Crows, and collected for the first time, Killing Monsters one-shot--and features annotations from the creators of the comics, as well as a sketchbook section.