por Martha Freeman
First Kids, de Martha Freeman, reúne 6 livros em série.
The Case of the Rock 'n' Roll Dog
2010
The Case of the Diamond Dog Collar
2011
The Case of the Ruby Slippers
2012
The Case of the Piggy Bank Thief
The Case of the Bug on the Run
2013
The Case of the Missing Dinosaur Egg
5 livros
3 livros