The Clue Of The Left Handed Envelope

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 has been using Todd's tree house without his permission.

With the help of their third-grade teacher and classmates, Noelle and Todd discover who sent an anonymous letter to Amber Lee.

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

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.

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

With the help of their third-grade teacher and classmates, Noelle and Todd discover who sent an anonymous letter to Amber Lee.

The reader can use visual clues and deductive reasoning to help Daisy and Ridley solve forty puzzling mysteries, with solutions presented at the back.