This book series by multiple authors includes books The Mystery of the Pharaoh's Diamonds, Ava & Carol Detective Agency: Dognapped, The Curse of the Red Devil, and several more. See the complete Ava & Carol Detective Agency series book list in order, box sets or omnibus editions, and companion titles.
In this third book of the Ava & Carol Detective Agency series, fearless best friends Ava and Carol set out to prove that the Butcher house isn’t haunted. Only, Carol is pretty sure she saw something inside one of the windows—and moments later, they are chased by a headless monster?!
The girls receive an ominous threat: Stay Away or Else! Now, more than ever, the girls are determined to find out who is trying to scare them away. But before they can continue their investigation, a string of mysterious robberies takes place. The thieves simply vanish without a trace.
Join Ava and Carol as they race against time to track down a headless monster terrorizing the neighborhood, solve the mystery behind the Butcher house and stop a band of ruthless thieves before they strike again!
By Guadalupe Rosendorf