Black Water

J. S. Meresmaa

Original title: Sysivesi

Author: J. S. Meresmaa

Illustrator: Elina Äijälä

Published: 2025

Publisher: Karisto

Genre: Middle Grade (8-12 Years)

Pages: 154

Part of a series: Monster Manor series

Part #2 of the captivatingly bone-chilling middle-grade horror trilogy

✓ Engaging middle-grade horror, with mystery and heart-pounding adventure!

✓ Captivating and relatable variety of characters

✓ Book #1 (Darkclaw) won the 2024 Tähtipöllö Award and was tied for second place for Kuopus Award 2024!

✓ J. S. Meresmaa is a winner of 2020 & 2023 Kuopus Award, and a nominee in 2023 for Kuvastaja Award and Tähtifantasia Award

✓ Monster Manor series is set in the same Monster-Finland world as the Monster Care series!  Children start with Monster Care and grow into Monster Manor for more adventures in a familiar world.

Fear always has friends.

Aapo has started working at the Monster Manor, home to many types of monsters. When a sickly and foul-smelling mud creature needs help, he sets out on his first monster hunt with his new friends.

Aapo’s mind, however, is haunted by the blackdread’s attack that left a nasty scratch mark on his chest. Nobody knows what the blackdread’s claws might do to a human. Aapo’s mysterious colleague Usva is also an enigma. Many things about Usva and Monster Manor remind Aapo of his recently deceased grandfather. How are all these things connected? It feels as if darkness is spreading around Aapo…

Download reading materials

Rights sold:
FINLAND: Karisto (orig.)

About author

J. S. Meresmaa

J. S. Meresmaa (b. 1983, she/they) is an award-winning Finnish author of fantasy and other speculative fiction. A versatile and imaginative storyteller, Meresmaa has been nominated for multiple literature prizes, and her books have earned glowing praise from both critics and readers.

Her backlist spans more than 30 titles, ranging from picture books and chapter books to middle-grade, young adult, and adult fiction. Meresmaa writes across formats—including novels, short stories, and verse novels—and she is constantly exploring new creative territory. Meresmaa’s recent titles include the middle-grade horror trilogy Lumola (Monster Manor), the ongoing chapter book series Hirviöhoitola (Monster Care), and the romantic cottagecore YA fantasy The Witch of Sardesia. Formerly a gardener and warehouse worker, she is now a full-time author. Meresmaa lives in Tampere, Finland, surrounded by an ever-growing collection of books and plants, and by the cheerful company of her guinea pigs.

Photo credit: Outi Puhakka

Bibliography


2025, Chapter Books (6-9 Years)

J. S. Meresmaa

Monster Care #4: The Wily Water Devil


2025, Young Adult (13 or 14+)

J. S. Meresmaa

The Witch of Sardesia


2025, Middle Grade (8-12 Years)

J. S. Meresmaa

Black Water


2024, Middle Grade (8-12 Years)

J. S. Meresmaa

Darkclaw


2024, Chapter Books (6-9 Years)

J. S. Meresmaa

Monster Care #3: The Horrific Hellcat


2023, Chapter Books (6-9 Years)

J. S. Meresmaa

Monster Care #2: The Shiny Skeletonbird


2023, Chapter Books (6-9 Years)

J. S. Meresmaa

Monster Care #1: The Manor Misfits