Molly Fyde and the Blood of Billions (Book 3) by Hugh Howey
Picking up right where Molly Fyde and the Land of Light left off, the third book in the Bern Saga finds Molly and her crew separated and the entire galaxy in jeopardy. Whether or not it can be saved will depend on their determination to reunite. And a quest for fuel on Molly's homeworld uncovers a sinister conspiracy involving thousands of murders. It's the same case her parents got sidetracked on so many years ago. Will Molly have better luck in solving it?
1. Molly Fyde and the Parsona Rescue
2. Molly Fyde and the Land of Light
3. Molly Fyde and the Blood of Billions
4. Molly Fyde and the Fight for Peace