***The first book in the incredible New York Times bestselling series***
Darrow is a Helldiver. A pioneer of Mars.
Born to slave beneath the earth so that one day, future generations might live above it.
He is a Red - humankind's lowest caste. But he has something the Golds - the ruthless ruling class - will never understand.
He has a wife he worships, a family who give him strength. He has love.
And when they take that from him, all that remains is revenge . . .