"The Dark Horse Book of" is a series of four horror anthologies published annually between 2003 and 2006. The volumes each contain original stories not previously published. So far, volumes have only been released as hardcovers. The second story in each volume is written and drawn by Mike Mignola and features Hellboy. All four of these Hellboy stories were collected in Hellboy: vol. 7 The Troll Witch and Others, published in October 2007.