This gilded abyss - Rebecca Thorne (Sapphic fantasy)

Death waits beneath the waves.
And two estranged lovers face their demons.

Sergeant Nix Marr left her dark past buried beneath the sea. Then Kessandra, the people’s favourite princess and Nix’s much-loathed ex, recruits Nix for a covert mission. Their goal: to investigate a massacre in the underwater city of Fall. Nix refuses, but still finds herself boarding a luxurious submersible as Kessandra’s bodyguard. After all, Kess always gets what she wants.

As they descend to the city, Kessandra reveals the chilling truth: they aren’t investigating a massacre, but the trigger that caused it – a sickness that turns victims into mindless killers. And when a royal passenger is murdered, it’s clear the infection is on board and no one is safe. Soon trusting Kessandra, despite her lies, will become Nix’s only hope.

From the Sunday Times bestselling author Rebecca Thorne, This Gilded Abyss is an intense, utterly thrilling science fiction adventure for fans of Arcane, BioShock and Tamsyn Muir's The Locked Tomb.