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

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

Todd and Noelle use the detective skills they learn from their new teacher Mr. Merlin to figure out who sent a classmate an anonymous letter and find out who ha

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

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