Noelle and Todd hope to impress their new third grade teacher by being the first to use his clues to figure out who sent an anonymous note to another classmate.
While visiting their friend Wallis and her adopted daughter on Mount Desert Island, Maine, Josh, Dink, and Ruth Rose investigate why three white wolf cubs were stolen, and by whom.
Thomas and his bionic dog McGrowl investigate when it becomes obvious that something is not quite right at Hiram Biddle's new obedience school for dogs.
McGrowl, a bionic superdog, is invited, along with his boy Thomas, to visit his original owner Edwina Tuttle, and finds himself on a wild goose chase, courtesy of the evil Milton Smudge.
When the umpire at the baseball game fundraiser is accused of stealing a collection of autographed baseballs, Dink, Josh, and Ruth Rose try to prove his innocence.
