Colorful illustration of a cityscape and river with children and animals, featuring the title 'The Thames and Tide Pool Club' by Katya Balen, with additional text referring to the 'Secret City' and illustrations by Rachael Dean.

The Thames and Tide Club: The Secret City

Written by Nicola Baker, published by Simon & Schuster

An exciting adventure series from Carnegie Medal winner Katya Balen, author of October, October and The Light in Everything.

Clem, Ash, and Zara are the Thames and Tide Club, weekend mudlarkers on the hunt for hidden treasures along the riverbank. Clem has found all sorts of things! Until one day, she discovers something magical that must be returned to the river… or else.

Before they know it, the friends are swept into a wild, underwater adventure to save Underwater London!

A story of mystery, friendship, and a splash of magic.

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Three colorful illustrated books titled 'The Thames and Tide Club' by Katya Balen, with underwater scenes, cityscape, and children, fanned out on a black surface. Part of a plant and a container are visible in the background.
A black and white illustrated page from a book showing a scene with a bridge over a river, clouds, trees, and a girl with curly hair and a skirt walking with a dog, along with some houses and a tire swing.
A girl with curly hair and striped shirt sitting on a bean bag chair in a cluttered room. Several books, a potted plant, a bunk bed, and various wall decorations are visible. A large leaf-shaped plant pot is on the floor, emitting steam. The room has a casual, lived-in feel.
A whimsical black and white illustration of a fantastical scene with various characters and objects, including a woman lying on a bed, fish swimming, a cat, a teapot, framed pictures, and a treasure chest, all in a detailed and imaginative setting.
A black and white drawing of a group of people in a room, looking out of tall arched windows showing floodwaters and collapsing buildings outside. The room is decorated with framed pictures, a hanging ceiling lamp, and a rug. The group includes men, women, and children, some pointing or looking concerned.
Three children running towards a whimsical castle labeled 'Luppinggum Palace,' with fish swimming in a pond and lush bushes surrounding the scene.
Underwater scene with a large crocodile dressed as a pirate, adorned with pirate hats, eye patches, and jewelry, surrounded by snake-like creatures wearing pirate hats, some with skull symbols, and a small girl with curly hair, all among rocks and sea plants.
A black and white drawing of a coat of arms with four quadrants, featuring a fish, a trowel, a bucket, and water waves, surrounded by decorative seaweed or coral.
A illustrated map of London showcasing landmarks and attractions including The British Museum, The British Library, Pikedilly Circus, St Paul’s Cathedral, Tower Bridge, Natural Fishery Museum, Batter-river Power Station, Big Bass, and Catfish and Castle, with small decorative elements like fish, plants, and clouds.

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Book cover illustrating the Thames and Tide Pool Club by Katey Balen with colorful ocean scenes, marine life, pirates, and a moonlit sky.

The Thames and Tide Club: Ghost Pirates
by Katya Balen

Colorful children's book titled "The Thames and Tide Club" by Rachael Dean, illustrated with whimsical sea creatures and lively characters, set on a vibrant background featuring Thames River scenes and marine life.

The Thames and Tide Club: Squid Invasion
by Katya Balen

Book cover titled 'Wave Riders' by Lauren St John, illustrated by Rachael Dean, showing children on a sailboat riding large ocean waves with storm clouds and lightning in the background.

Wave Riders
by Lauren St John