Steinkraus 
Curious Case of the Ransom Riddler [PDF ebook] 

The Gumshoe Gang has their next case and it hits close to home. One of their own detectives is missing his RC race car and has to crack the ransom note! Caleb needs his car back in order to compete in the school’s RC race car race on Sunday and he has no time for these nonsense riddles. Can his friends help him crack the notes? Who would steal a RC race car anyway? And why does it smell like rotten eggs? These mysteries are perfectly suited to keep readers guessing as they solve for clues. With longer sentences and fewer illustrations, they are just the right fit for your early fluent reader. * Underlying issues related to friends, family, and growing up * Keeps kids guessing with false clues * Extensive back matter