Get the Earth's Last Gambit bundle, featuring all four books in this first-contact series blending hard sci-fi and edge-of-your-seat action.

During a classified mission to the ISS, astronaut Jack Kildare picks up an eerie signal. An alien spaceship is orbiting distant, icy Europa. It looks derelict...but is it? As fear sweeps across Earth, NASA spearheads a frenzied effort to build a ship capable of traveling to Jupiter to confront the alien menace. Technology intertwines with espionage and sabotage in a race against the clock. Fighting for his rightful place in the mission, Jack finds himself submerged in a world of secrets, international power games, and cold-blooded murder.

Bearing Earth's hopes for deliverance from the alien threat, Jack Kildare and his fellow astronauts successfully complete the long journey to Jupiter. But someone on board is trying to sabotage the mission. As they approach the mysterious alien spaceship orbiting Europa, the crew fractures into rival factions. Without warning, a long-range attack cripples the human ship. Now the broken crew is the least of Jack's worries. The alien spaceship isn't a wreck, after all. And whoever is on board wants the humans dead.

Jack Kildare and the survivors of the Spirit of Destiny are stranded on Europa, while an alien planet-killer sets its deadly sights on Earth. But Jack's not done fighting. Not yet. Abandoned by mission control, the astronauts embark on a life-or-death pursuit of the alien behemoth that now has Earth in its crosshairs. The 400-million-mile running battle will test Jack and his ship to their limits. Yet the greatest danger lurks closer to hand, on board the Spirit of Destiny itself. Which ship will win the race?

Now the planet faces a brutal alien conquest. The Spirit of Destiny lies wrecked on the moon On Earth, the crew of the alien behemoth Lightbringer spread destruction across a planet racked by conflict. But Jack and his fellow survivors of the Europa mission, trapped in Earth's ramshackle little moon colony, haven't given up. Exposed to the constant threat of attack, they come up with a perilous plan to return to Earth and fight the aliens.