Mrs. Marbles' Handbook For Young Detectives

Mrs. Marbles' Handbook For Young Detectives
Item Type	Book
Owner	Fern Walters
Appearances
First Appeared (cartoon)	The Boy Who Cried Comet!
First Appeared (books)	Arthur and the Comet Crisis

Mrs. Marbles' Handbook For Young Detectives is a book that Fern took tips from in The Boy Who Cried Comet!. It gives techniques on noticing small details to make a good conclusion, for example: bad breath means you didn't brush your teeth, which means that you would have woken up late.