The Sandyhook Secret. The Seaside Sleuths

A year has passed since Mia, Theo, and Lily uncovered a secret tunnel beneath the crooked lighthouse of Pebble Cove - and one mystery left behind a letter. A tall jagged rock on a faraway beach. A red X. And the words of an old woman they have never met. Now twelve-year-old Mia is back at the seaside, and Mrs. Brooke of Sandyhook is waiting. Five generations of her family have searched for what one of her ancestors hid in 1842, and never found it.
But there is a map. And on it, in faded ink, only five words: Look where the moon points. When the children discover what no one has noticed in a hundred and eighty years, the search becomes dangerous. A stranger in a long dark coat is asking questions in the village. He is watching the cottage. He is waiting on the beach. And the tide does not wait for anyone. The Sandyhook Secret is the second book in The Seaside Sleuths - a coastal mystery for readers age 7 and up, full of friendship, courage, and the slow turning of an ancient secret.