The Day of the Ness - Paperback

by Andre Norton (Author), Michael Gilbert (Illustrator), Michael Gilbert (Author)

Ten-year-old Hal responds to a frantic S.O.S. from a group of friendly but timid space aliens held captive inside a mountain by the evil Ness. Hal, with the help of his cat Susie and the little Think-Think, the Stalker, and other small aliens, comes up with an ingenious solution to foil the plan of the evil Ness to take over the world.