“Peaceful Knights”
Black Thorn joins Checkmate. Checkmate scientists analyze Bishop's destroyed armor. Peacemaker investigates a rash of scientist suicides.
See fair market value at every grade, raw and CGC, with value history and the grading break-even.
Already a member?
Key issues are always free. See every key issue.
Checkmate #23 (1988) is issue #23 of DC's Checkmate (1988–1991), with a cover date of December 1989. Written by Paul Kupperberg and drawn by Steve Erwin.
Credits, characters and story details from the Grand Comics Database, CC BY-SA 4.0.