We all know and love Ramona, Matilda, and Harriet the Spy. Now meet Ernestine.
Ernestine Montgomery is the kind of kid who gets things done. She's smart, prepared, and always knows just what to do. But there's big trouble brewing inside the walls of the rambling old mansion where she lives... and only Ernestine can decipher the clues that point in one direction-murder!
Can Ernestine solve the mystery before catastrophe strikes?