Colin’s Monster

Author: Holly Swain

Interest age: from c 3 years | Holidays & seasonal interest | Picture storybooks | Family & home stories (Children's / Teenage) | Humorous stories (Children's / Teenage) | People & places (Children's / Teenage) | Mysteries, the supernatural, monsters & mythological beings (Children’s/Teenage) | Personal & social issues: self-awareness & self-esteem (Children's / Teenage)

Published on 27^th August 2026 by HarperCollins Publishers (Farshore) in the United Kingdom as part of the 'A Colin and Duck Story' series.

Paperback / softback | 32 pages
280mm x 220mm | 180g

Colin and Duck are back – and this time, there’s something lurking in the castle dungeon!

The third book in the award-winning Colin and Duck series!

Welcome back to Colin’s Castle – where Colin and Duck have noticed a VERY strange noise! They search from top to bottom, finding rooms they have never been in before – and rooms they will never go in again. Soon there is only one place left to look … the DUNGEON!

Uh-oh! Colin and Duck have never been inside the dungeon. What – or who – is making the noise … and why?!

• Love Traitors? Check out this seriously suspenseful picture book!

• The perfect book to share or gift during spooky season!

• A hilarious readaloud story

Colin’s Castle won the English Association 4–11 Picture Book Award 2024 and the Oxfordshire Book Awards Best Picture Book 2025.