Zero Fathoms (Mara Vance #2)

Zero Fathoms (Mara Vance #2) by Abir Mukherjee is out now (published June 30, 2026).

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Zero Fathoms (Mara Vance #2)
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Zero Fathoms (Mara Vance #2) Release Date: June 30, 2026

Published

The dead are calling from eleven thousand metres down. And the recording is dated eleven days from now.

Hydroacoustician Mara Vance survived the dive that killed her partner. She has not survived the silence since.

Then a sealed data drive arrives on her doorstep, still warm, addressed in the handwriting of a mentor nineteen years dead. On it: forty-one minutes of sound recorded eleven thousand metres below the surface, in a trench where six scientists vanished without a trace two decades ago. Six voices. One of them says her name.

The file is dated eleven days from now.

To learn what’s waiting at the bottom of the world, Mara joins a covert expedition aboard a ship built around a single secret, descending toward something ancient that has been listening to the ocean for longer than there have been people to drown in it. It remembers every soul it has ever taken. And after nineteen years, it has been waiting, very patiently, for her.

Zero Fathoms: The Abyss Remembers is Book Two in the Zero Fathoms series, a hadal-zone survival thriller for readers who loved the claustrophobic pressure of Sphere, the hard-science precision of The Martian, and the slow-burn cosmic dread of Annihilation.

How deep would you go to hear a voice you lost?

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Genre: Science Fiction

Abir Mukherjee

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