325Y: Boy Spends Summer At Beach Solving Mystery

I believe this book is for middle grade and from the 1970s or before. It is about a boy who spends the summer away from home, near the ocean or on an island. The first night there, he see someone using Morse code to spell out his name. Later, he learns it is another boy who wants to be friends. (They become friends.) There is some type of mystery to be solved and a man (maybe a relative?) tries to kill the boy at the end of the book. There are caves or some kind of natural phenomenon where at the right tide, the wind/water rushes through, sounding like ghosts moaning. When the man is after him, the boy has to face his fear and enter the caves to escape.

7 thoughts on “325Y: Boy Spends Summer At Beach Solving Mystery

    • Thank you but that’s not it. It’s not fantasy. A contemporary (at the time) book about a boy solving a mystery.

  1. Several of the elements remind me of “The Back House Ghosts” by Catherine Sefton – but the characters in that are girls, Ellen (and her big sister Bella) who help their mother run a guest house, and Violet, a guest who becomes friends with Ellen. There is signalling with lights (but not between the girls – it’s part of the mystery) and a cave sequence similar to the one in *Over Sea, Under Stone*.

  2. Thank you, but that’s not it. It’s not a fantasy. There is a hint that there’s something paranormal going on, but those events are explained.

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