Download or read book Superman (1939-1986) #20 written by Jerry Siegel and published by DC Comics. This book was released on 2020-01-23 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: A practical joke by Lois exposes Clark’s secret identity, forcing him to “masquerade” as Superman. A German inventor creates an army of Nazi-controlled sea serpents that Hitler plans on using against Allied convoys.