Starcross

There is an old if something is too good to be true, it probably is. Take the holiday that Art Mumby, his irritating younger sister Myrtle, and their mother take to Starcross, the finest sea-bathing resort in the entire Asteroid Belt. The fact that there are no seas anywhere should give you a clue. Sure enough, Art and family quickly find themselves grappling with French spies, Yankee rebels, and man-eating starfish. With stops to the future and prehistoric Mars, it's all Art can do to keep his head about him - which is essential, since everyone else is losing theirs!