Chicagoland Detective Agency: Book 4: The Big Flush
- Publisher: Lerner Publishing Group
- Written By: Trina Robbins
- Art By: Tyler Page
- Language: English
- Digital Release Date: June 3rd, 2020
Have Raf and Megan really been taken over by a ghost from a hundred years ago? Can Bradley dig up the mystery that's dogged Pine Lake Academy for a century? What deeply buried dastardly deeds will bubble to the surface?