Shadow Captain (Revenger, #2) by Alastair Reynolds
Excellent sequel to 2016's Revenger. If you tried to sell this series to me - runaway sisters become fearsome space pirates while trying to figure out various mysteries about the rise and fall of a far future civilization and some truly funky currency - I'd put them someone pretty far down my to do list. But in Alastair Reynolds' hands it's a space opera masterpiece. Can't wait for the next installment.