B.P.R.D.: Killing Ground #4 was published by Dark Horse Comics on November 1, 2007, as part of a series that began in 2007. John Arcudi and Mike Mignola write, and art comes from Carlo Pagulayan, Dave Stewart and David Stewart. This 32-page issue features Abe Sapien, Elizabeth Sherman, Dr. Kate Corrigan, Johann Kraus and The Lobster, among 9 characters cataloged on VerseDB.