Patty and Jo, Detectives is a mystery novel written by Elsie Wright. The story revolves around two teenage girls, Patty and Jo, who are best friends and have a passion for solving mysteries. When a valuable necklace goes missing from a wealthy neighbor's home, the girls are determined to crack the case and find the thief. As they investigate, they encounter a number of suspects, including the gardener, the butler, and even the owner of the necklace...