5 books in series

The Polk Street Mysteries

The Polk Street Mysteries is a 4-book series with 5 primary works first released in 1987 with contributions by Patricia Reilly Giff.

Also known as The Polka Dot Private Eye

The Mystery of the Blue Ring
The Riddle of the Red Purse
The Secret at the Polk Street School
Case Cool Itch Kid
The Trail of the Screaming Teenager