Supergirl and the Legion of Super-Heroes #19

A glowing chalk outline of a body — splashed with vivid red — dominates this 2006 issue's cover, as a ring of onlooking Legionnaires gaze down at what the tagline boldly calls "A 31st Century Whodunit!" Barry Kitson's cover art frames the grim scene with cool tension, surrounding the eerie silhouette with a cast of familiar super-powered faces wearing expressions ranging from suspicion to unease. Mark Waid and Kitson clearly had mystery on the menu when this one hit stands.