Countdown to Mystery #7 was published by DC Comics on May 1, 2008, as part of a series that began in 2007. Adam Beechen and Fabian Erlinghäuser write, and art comes from Chad Hardin, Chris Chuckry and Dan Brown. This 52-page issue features Plastic Man, Spectre, Creeper, Eclipso and Dawn Granger, among 13 characters catalogued on VerseDB.