Sign-In
Cart
The Secret of the Deepwater Portal
Paperback
Series: Willabrook Adventures, Book 3
General Juvenile FictionScience Fiction
Publisher: Harley Blue
Published: Feb 15 2026
Pages: 70
Weight: 0.18
Height: 0.17 Width: 5.25 Depth: 8.00
Language: English
Willabrook is finally calm again.
The clocktower ticks. The river flows. The town feels safe.
Until the river drains.
When a massive glowing hole opens in the riverbed, Alex, Jess, and Sam discover something far older than time glitches or broken inventions - an entire buried city hidden beneath Willabrook.
But the ancient Undercity is waking up.
A towering stone guardian rises. A terrifying Sentinel stalks the tunnels. And when Alex is pulled into the depths by a mysterious spiral key, Jess and Sam must follow him into a world powered by memories themselves.
Deep underground, they uncover the truth about the city's collapse - and the dangerous power hidden at its Core.
If they can't stabilise it, the river won't just flood...
The Secret of the Deepwater Portal is a thrilling underground adventure about courage, friendship, and the power of remembering who you are - even when the world beneath your feet begins to wake.
Also from
Blue, Harley
Also in
General Juvenile Fiction
Percy Jackson and the Olympians, Book Two the Sea of Monsters (Percy Jackson and the Olympians, Book Two)
Riordan, Rick
Paperback
Anne of Green Gables, 3-Book Box Set, Volume I: Anne of Avonlea; Anne of the Island; Anne of Green Gables
Montgomery, L. M.
Paperback
Percy Jackson and the Olympians: Sea of Monsters, The: The Graphic Novel
Venditti, Robert
Riordan, Rick
Paperback
Mary Anne Saves the Day: A Graphic Novel (the Baby-Sitters Club #3): Full-Color Edition
Martin, Ann M.
Paperback
Claudia and Mean Janine: A Graphic Novel (the Baby-Sitters Club #4): Full-Color Edition
Martin, Ann M.
Paperback
Dog Man: Big Jim Believes: A Graphic Novel (Dog Man #14): From the Creator of Captain Underpants: Volume 14
Pilkey, Dav
Hardcover
Rowley Jefferson's Awesome Friendly Spooky Stories 2: From the Creator of Diary of a Wimpy Kid
Kinney, Jeff
Hardcover
Wings of Fire: The Dragonet Prophecy: A Graphic Novel (Wings of Fire Graphic Novel #1): Volume 1
Sutherland, Tui T.
Paperback
Investigators: Agents of S.U.I.T.: Sew Much Trouble
Green, John Patrick
Hastings, Christopher
Hardcover
Dog Man: The Scarlet Shedder: A Graphic Novel (Dog Man #12): From the Creator of Captain Underpants: Volume 12
Pilkey, Dav
Hardcover
Dog Man: Big Jim Begins: A Graphic Novel (Dog Man #13): From the Creator of Captain Underpants: Volume 13
Pilkey, Dav
Hardcover