Spirou #3866 was published by Dupuis on May 1, 2012, as part of a series that began in 1938. Fabien Vehlmann and Jean-Michel Thiriet write, and art comes from BenBK, Bruno Gazzotti and Christian Darasse. This 52-page issue features Marsupilami, Agent 212, Nelson, Tamara and Mélusine, among 10 characters cataloged on VerseDB.