Leviathan Wakes. Book 1 of the Expanse

Humanity has colonised the solar system - Mars, the Moon, the Asteroid Belt and beyond - but the stars are still out of our reach. 
Jim Holden is an officer on an ice miner making runs from the rings of Saturn... to the mining stations of the Belt. When he and his crew discover a derelict ship called the Scopuli, they suddenly find themselves in possession of a deadly secret. A secret that someone is willing to kill for, and on an unimaginable scale. War is coming to the system, unless Jim can find out who abandoned the ship and why.
Detective Miller is looking for a girl. One girl in a system of billions, but her parents have money - and money talks. When the trail leads him to the Scopuli and Holden, they both realise this girl may hold the key to everything.
Holden and Miller must thread the needle between the Earth government, the Outer Planet revolutionaries and secret corporations, and the odds are against them. But out in the Belt, the rules are different, and one small ship can change the fate of the universe. A special 10th anniversary edition of the New York Times bestselling Leviathan Wakes, the first book that launched the Hugo Award-winning Expanse series - now a major TV show.