Soon after she arrives on Shag Island city kid Kimball Lauder sizes up the situation of her supposedly senile 93-year-old great-grandfather. While her mother is too distracted to listen to the old man's protests against the plan to sell his island mansion, the Anchorage, Kim knows that the Chinese ghosts haunting him are real. . . and when the radio wires are cut and a strange boy is seen hiding down by the cove, Kim guesses that the plot is too complicated to be the single-handed work of Sophie, the managing housekeeper who has been practicing Grandpa's signature in her room. You'll size up the situation too. . . serviceable Yankee gothic, strewn with clues and curios, to be picked up on some stormy vacation evening.