First published 1949
Young colonist Jim Marlow befriends the strange alien Willis, who unwittingly stumbles upon a deadly plot against the Mars settlement. When Jim tries to warn the authorities, he's branded a troublemaker. But with Willis's help, Jim races to uncover the truth and stop the impending disaster before it's too late. Can this unlikely duo save the colony, or will their interference only make things worse?
Genres: science-fiction, adventure, mystery, thriller
Vibes: fast-paced, suspenseful, thought-provoking
Tropes: race-against-time, unlikely-duo
Setting: Mars (Planet)
189 pages · Mass Market Paperback · Del Rey