CDRadiant

A forgotten seaside town. A pier that whispers secrets. A tunnel no one was meant to find. When five friends arrive for what should have been an ordinary school trip, they instead step into a place where the air feels heavy with unspoken stories and the sea seems to guard something long buried. Lena, Finn, Ruby, Toby, and Maris sense it from the moment they arrive: the quiet in this old harbour town isn't peaceful - it's watchful.
Faded posters of missing townsfolk, strange markings in cobblestones, and a plank beneath the pier that echoes like a hollow heartbeat pull them deeper into a mystery the town has tried to forget. Their search leads them to an abandoned row of sheds. and the hidden trapdoor beneath them. What lies below is a cold, winding tunnel carved through stone - a place where the past lingers, where names are etched into the walls, and where the truth of those who vanished waits in the dark.
As a tide-driven danger rises around them, the friends must piece together a decades-old secret before the sea claims the last of what was hidden. Atmospheric, suspenseful, and rich with cinematic detail, The Tunnel Under the Crumbling Pier is a YA mystery adventure that will pull readers into its fog-filled world and keep them turning pages long into the night. Perfect for fans of small-town secrets, underground mysteries, and slow-burning suspense with heart.