Absolute Zero (The Sector Wars, Book 1)

Introducing the crew of the Harpy: a ragtag group of spacers hauling cargo in the outer rim. Until someone tries to blow them out of the Black.
Alcohol, women, and space, that's what keeps Captain Kael Jameson going. Plus the crew he's managed to gather in place of a family.
But when he's forced to destroy something precious in order to save the ones he loves most, his world is turned upside down in a heartbeat.
Things get bad after that, and he already had a hangover.
Alien hitmen, political intrigue leading to civil war, and a cunning pirate overlord; you'd think it couldn't get any worse. But it does. When an unidentified enemy enters the known systems and starts picking New Earth's allies off, one by one, life as we know it falls apart.
Either Kael and his crew beat them. Or get beaten. It's going to be a close call.