The hero, Jim "Jet-Ace" Logan, was an ace interplanetary pilot of the
RAF; stories were set about 100 years in the future (for example, the story in the 1963
Tiger Annual is set in 2063). In all but the earliest stories, his regular copilot, Plum-Duff (sometimes Plumduff) Charteris, accompanied Jet-Ace. In later stories, Jet-Ace and Plumduff belonged to various
law enforcement agencies, such as the Solar Police rather than
military organizations. ==References==