Noelle and Todd track down the owner of the car that ran over Misty's brand-new bike.

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

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.

Todd must conquer his fear of spiders and cobwebs in order to help his third-grade class catch a thief.

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.

Nancy, George, and Bess can’t believe the out-of-this-world contest McCormick’s grocery store is having—the kid who guess the number of jelly beans in the jar wins a trip to a space camp! Nancy is superexcited because she has been studying the stars and planets with her brand-new telescope, and space camp would be just the thing to test her new skills. But then the jelly-bean jar goes missing, and it looks like no one will get the chance to blast off to space camp. Who would steal a jelly-bean jar? Nancy must use her star-power detective skills to find out!