Rick Urquhart travels to a dying, dreamlike Mars in search of a secret left behind by his father—an invention rumored to hold immense power. What begins as a personal quest quickly draws him into the tensions between Earth’s expanding influence and the ancient Martian cultures struggling to survive. As he moves through crumbling cities, canal networks, and desert strongholds, Urquhart finds himself entangled in intrigue, rebellion, and the shifting loyalties of a world on the brink of change.

Haunted by both his father’s legacy and the fragile state of Mars itself, Urquhart must decide what role he will play in the planet’s future. The mysterious force he seeks could tip the balance between domination and preservation, but understanding it means confronting the deeper conflicts between progress and tradition, conquest and belonging. Brackett blends adventure with a sense of melancholy, portraying Mars as a place of fading grandeur where every action carries lasting consequences.

Originally published under the title Shadow Over Mars, the novel reflects the pulp era’s fascination with romantic, otherworldly landscapes and larger-than-life struggles, while hinting at more complex themes of cultural survival and identity.