Three weeks at the beautiful Merlin's Cove in Wales sounds like great fun to four friends, but someone else has got much more sinister plans for the beach—at night. Could it be the strange man Snubby meets on the first day, or is it to do with the ragamuffin he mistakes Snubby for?
A cosy house surrounded by snow-covered hills seems a perfect place to spend the Christmas holidays, but the peace is disturbed by unexplained noises. What is it that Snubby can hear coming from the cellar? He goes to investigate and mysteriously vanishes!
When cousin Snubby and Great-Uncle Robert come to stay with the Lyntons, the children learn of a mysterious theft of valuable, historic papers from a locked room, and Snubby's imagination runs riot. But little do any of them know how close he is to the truth.
