Rigel, Kline, and Eta have penetrated the Luna 2 citadel. Now is their chance to restore some measure of balance to a stagnant, truculent society.

Moonfall! Kline leads his army across the surface of Luna 2. Separated from his allies, can he find Goliath Shaw in time to stop the slaughter?

The Borzya team returns to the Moon, assembling in the Sea of Tranquility. Little do they know that the Foci has set into motion a sinister plot that threatens all of civilization.

The Purlieu is a harsh caricature of humankind--an entity pushed so far to its limits that only evil, intolerance, ruthlessness, and fear survives. Even so, as Rigel accelerates into the Purlieu, he can't help but feel at home.

With Kline's conscience in turmoil, his hope of turning thousands of prisoner-slaves into freedom fighters is even less likely than his hope of surviving the thorium sands at all.

Rigel and Bella awaken from cryosleep to find their link to Borzya severed. They thought they were alone on board, but muffled cries for help float through the halls of Megara.

3, 2, 1...launch! The Borzya team sets out for Mars. But will the world they hope to save ever be the same?

Rigel prepares to pilot Megara away from Saturn. Yet something ominous looms over him as he prepares to set out into space once more--not in the direction of the stars, but toward the Moon.