For generations, the solar system -- Mars, the Moon, the Asteroid Belt -- was humanity's great frontier. Until now. The alien artifact working through its program under the clouds of Venus has appeared in Uranus's orbit, where it has built a massive gate that leads to a starless dark.
Jim Holden and the crew of the Rocinante are part of a vast flotilla of scientific and military ships going out to examine the artifact. But behind the scenes, a complex plot is unfolding, with the destruction of Holden at its core. As the emissaries of the human race try to find whether the gate is an opportunity or a threat, the greatest danger is the one they brought with them.
When ice miner captain Jim Holden stumbles upon an abandoned ship in the Asteroid Belt, he doesn't immediately realize that he and his crew have chanced upon a secret that threatens the entire human race. Nor can he yet understand the role that a lone detective searching for a vanished girl will play in his search for an equalizing force. George R.R. Martin calls James S.A. Corey's Leviathan "a really kickass opera?.interplanetary adventure the way it ought to be written."
We are not alone.
On Ganymede, breadbasket of the outer planets, a Martian marine watches as her platoon is slaughtered by a monstrous supersoldier. On Earth, a high-level politician struggles to prevent interplanetary war from reigniting. And on Venus, an alien protomolecule has overrun the planet, wreaking massive, mysterious changes and threatening to spread out into the solar system.