It’s hard to escape secrets from the past.

Storm clouds gather over Lily and Robert’s summer when criminal mastermind the Jack of Diamonds appears. For Jack is searching for the mysterious Moonlocket – but that’s not the only thing he wants.

Soon, dark secrets from Robert’s past plunge him into danger, because Jack is playing a cruel game. Lily and Malkin, the mechanical fox, must stay one step ahead before Jack plays his final, deadly, card…

This second book in the bestselling Cogheart Adventures series is a thrilling tale of catastrophe and courage…

Moonlocket was shortlisted for the Books Are My Bag Readers Award and the Islington Primary School Book of the Year. 

Cover Design: Kath Millichope. Illustration: Becca Stadtlander.


UK readers buy here….

US readers buy here…

See Inside Moonlocket…


Download this sample chapter…

Hear me introduce Moonlocket and read the prologue…

Moonlocket Reviews

With lots of thrilling dashing about, fleeing from blackguards, and enjoyable wordplay, this should satisfy genre fans… A “tockingly” good steampunk mystery” Kirkus Review

“Drawing on wondrous detail and strongly motivated characters, Moonlocket is a caper with heart.”Foreword Reviews

“A worthy sequel, with the same whip-smart plot, effortless world building, and delicious warmth. I raced through it… A must-read for all fans of adventure – children or not.” – Kiran Millwood Hargraves, author of The Girl of Ink and Stars and The Island at the End of Everything.
“Deliciously dark and irresistibly gripping, Moonlocket proves to be another extraordinary story that you won’t want to forget.” – Jo Clarke, BookloverJo
“Moonlocket is a spellbinding sequel, a rollercoaster journey full of catastrophe, buried secrets breathtaking courage and intrigue.” – Pam Norfolk, Lancashire Post
“The fabulous follow-up to Cogheart – adventure by the spadeful!” – ReadingZone
“This brilliant sequel to Cogheart is full of daring, danger and family secrets in a richly imagined world that will sweep you away. A fantasy series that is magical, mysterious and mesmerising.” – Zoe James Williams, South Wales Evening Post.
“All the charm and appeal of his debut… Original, and exciting this is a delight.” ~ Andrea Reece, LoveReading4kids