Mai Tais for the Lost

The year is 2112 and on an environmentally ravaged Earth, there are habitat cities under the sea. Marrow Nightingale is a PI in Electric Blue Moon, one of the oldest of these cities, and when her adoptive brother Rocket Nightingale is murdered, there are more than a few people who would like to see her sent to the burning surface for the crime. Marrow must become her own client and catch a killer before she's sunk--or surfaced.