Abaddon's Gate by James S.A. Corey

     This is the third book in The Expanse series and needs to be read in order. The first book is Leviathan Wakes.

     This third installment doesn't disappoint. The line of dominoes that was pushed by the release of the Protomolecule,  has given the opportunity for someone to put Holden once again in the cross-hairs, setting a secret plan in motion, one that needed what the Protomolecule Gate inn order to pull Holden into the right place, at the right time. But this time the threat isn't just The Protomolecule and the humans who have been playing God, and trying to manipulate things to their favor, it’s not even the player with grim intentions for Holden and his crew, the worst threat was already brought within them to the Gate.

     By the end, again, one is left wondering where the humans of The Expanse will end up next.