Guardian of the Depth

Book I

by Tilly Hornsby

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Book 1 of Guardians of the Depth

Pub Date 28 Apr 2026 | Archive Date 23 Jun 2026

Atmosphere Press

Sci Fi & Fantasy

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Description

Destiny rises with the tide — but some currents cannot be controlled.

When twenty-two-year-old marine biologist Kaia Jones moves to her grandparents’ secluded Scottish cove, she expects peace, quiet, and time to focus on her research. Instead, she finds a pirate captain at her window, a glowing amulet pulsing with mysterious power, and a family legacy she never knew existed.

Kaia quickly learns the truth: she is the Guardian of the Depths, heir to a magical lineage tied to pirates, sea monsters, and ancient curses. Thrust into a world of high-stakes battles, dark secrets, and treacherous alliances, she must master her new powers—or risk losing everything she loves.

As danger and destiny collide, Kaia must choose between the life she thought she wanted and the extraordinary one she was born to live.

Destiny rises with the tide — but some currents cannot be controlled.

When twenty-two-year-old marine biologist Kaia Jones moves to her grandparents’ secluded Scottish cove, she expects peace, quiet...

A Note From the Publisher

Tilly Hornsby is a fantasy writer who loves creating stories where ordinary moments transform into impossible magic. Her work is guided by a love for the extraordinary, adventure, and beautiful scenes that come to life on the page. When she isn't writing, Tilly can be found exploring new coffee shops, playing the bass guitar, and, adventuring with her pet dog, Luna - a cuddly Hungarian Vizsla who has perfected the art of getting in the way when Tilly is trying to do her work!

Tilly Hornsby is a fantasy writer who loves creating stories where ordinary moments transform into impossible magic. Her work is guided by a love for the extraordinary, adventure, and beautiful...

Advance Praise

"Tilly Hornsby could not have crafted a better female lead than Kaia in Guardian of the Depths. Once we are in the throes of the storyline, we see her true growth as she settles into life aboard the Neptune’s Dagger, and her commitment to mastering sword training and water magic. I love Elodie Love, the ship's captain. That said, the best, most fist-pumping angle is that the crew is all female. That's right. An all-female pirate ship! The women are a crew with another twist, chased by both rival pirates and pirate hunters. [...] This is the first novel in a series, and I'm excited to see where it goes next. Very highly recommended." - Reader's Favorite

Marketing Plan

Press Release/One-Sheet

Goodreads book page Social media outreach

Live virtual events

Customized book announcement email

Editorial reviews

Strategy calls with publicist

NetGalley campaign

Press Release/One-Sheet

Goodreads book page Social media outreach

Live virtual events

Customized book announcement email

Editorial reviews

Strategy calls with publicist

NetGalley campaign

Available Editions

EDITION	Paperback
ISBN	9798901741436
PRICE	$17.99 (USD)
PAGES	252

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