Journey into Unknown Worlds #4

In "Return from Mars," Jo, a man who claims to have returned from the Red Planet, finds himself at the center of a quiet but dangerous conspiracy. The Martians, unable to conquer Earth without destroying it, send agents to stir unrest and push humanity toward self-destruction—just as Jo begins to suspect he might be one of them.

In "The Lost Land," a man rises to rule an underground civilization, only to face tragedy when experimental weapons meant for a surface invasion spiral out of control, destroying his people. Now alone beneath the earth, he is haunted by his fate—and his newfound, endless life, a consequence of radiation treatments that have made him immortal.