Hydra

Arttu Tuominen

Original title: Hydra

Author: Arttu Tuominen

Published: 2026

Publisher: Otava

Genre: Crime & Suspense

Pages: 365

Part of a series: Crystal trilogy

Reading material:

Finnish edition, English synopsis

The second book in the Crystal trilogy weaves together several brutal human destinies into a world‑class thriller.

In Paris’s “Sky City,” crime, addiction, and gang violence rule everything. Louis, who has risen from there through sheer talent, lands the publishing contract of his dreams—but a childhood friend entangles him in life‑threatening drug money.

In Helsinki, bank director Juhani Roine, consumed by gambling addiction, loses outrageous sums on credit. Soon he becomes part of the plan devised by a French‑Colombian drug organization and Marc Guillan.

In Colombia, the pregnant Estelle works on a cocaine farm.

In Finland, Liina is on the verge of losing her sister to a drug cartel.

Hydra is a beast whose head multiplies when cut off!

“Tuominen’s storytelling is cinematic, the plot moves at the speed of a snowmobile, and in the end, all the loose ends are beautifully tied together.”

– Mari Paalosalo-Jussinmäki, Eeva magazine, on ALEC book #1 in the series

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Rights sold:
FINLAND: Otava (orig.)
ESTONIA: Rahva Raamat AS
FRANCE: La Martinière
GERMANY: Bastei Lübbe
NETHERLANDS: De Fontein

About author

Arttu Tuominen

Arttu Tuominen (b. 1981) is a Spiegel bestselling author and environmental inspector based in Pori, Finland. During the evenings, he writes dark and tough crime novels. He is best known for his psychologically nuanced and gripping crime novels. Tuominen's novels are acclaimed for their intense atmosphere, compelling plots, and richly drawn characters.

His River Delta series has sold over 230,000 copies in Finland alone and has been published in six different languages. Tuominen has received numerous accolades, including the Vuoden Johtolanka (Clue of the Year) award for The Oath and the Palle Rosenkrantz Prize from the Danish Crime Academy for Jeopardy. In addition he has been nominated for the prestigious Glass Key Award. His novels have earned praise from both critics and readers, firmly establishing him as a leading voice in Finnish crime fiction.

Bibliography


2026, Crime & Suspense

Arttu Tuominen

Hydra


2025, Crime & Suspense

Arttu Tuominen

Alec


2024, Crime & Suspense

Arttu Tuominen

The Stager


2023, Crime & Suspense

Arttu Tuominen

The Liberator


2022, Crime & Suspense

Arttu Tuominen

Shamed


2021, Crime & Suspense

Arttu Tuominen

Silenced


2020, Crime & Suspense

Arttu Tuominen

Jeopardy


2019, Crime & Suspense

Arttu Tuominen

The Oath