Carl Barks's first foray into his signature series of adventures in "lost civilizations'' takes the Ducks deep into the Everglades, where they find themselves bedeviled by the enigmatic Gneezles, who have escaped detection from outsiders since the days of Ponce de Le n -- and want to keep it that way. Then, the fun comes fast and furious as Donald invents a radar detector to track the nephews, the boys open their own detective agency, an ice-skating...