Noelle and her friend Todd decide to investigate when her dog Rover is unjustly accused of tearing up Mrs. Ruston's tomato plants.

When her dog Rover is accused of tearing up Mrs. Ruston's tomato plants, Noelle investigates with her friend Todd and finds long yellow hairs that may point to the real culprit.

Todd uses clues from earwax and a pink handkerchief in order to discover which of his schoolmates has been in his treehouse.

Can the Third-Grade Detectives crack a case without Mr. Merlin?

The Detectives are looking for clues to clear Mr. Roper of charges that he stole the oysters.

Abigail, Jacob, Zack, and Bo travel back in time to visit Alexander Graham Bell, and they urge him not to give up on his efforts to invent the telephone.

Nancy, George, and Bess are spending the first part of their summer at a cooking camp called Kid Kuisine, where their excitement turns to bafflement when their test recipes turn out to be disasters.