Key to the Treasure

"Each summer Lisa, Bill, and Jed visit their grandparents, and they hear the story of the sketches hung above the mantel. The sketches are clues to a hidden treasure, and no one has been able to figure them out for a century. There is a missing first clue, but when the children stumble upon the second clue, they're on their way. Could it be that on this visit they will solve the secret that has eluded so many for more than a hundred years?"@en
"Three youngsters visiting their grandparents during the summer use a clue to retrieve a treasure hidden on their grandfather's farm."
"Three children unravel a century-old mystery."@en
"Three children unravel a century-old mystery."
"Liza, Bill, and Ted unravel a series of coded clues that solve a family mystery while spending the summer on their grandparents' farm."@en
"A young detective trio decode secret messages left a hundred years before by their great-grandmother in an attempt to solve the secret that had eluded so many for more than a century."@en
"Three youngsters use a code to retrieve a treasure hidden on their grandfather's farm."@en