In this episode. Making a metal detector to uncover buried treasure AND finding a cookie thief by analysing bite marks AND finding the clues left by an unsuspecting typewriter AND getting your hands dirty in a rather stinky mystery. Metal Detector China and Liam are on the case of a burglary. Someone has stolen precious coins from a guest's hotel room. They follow the crook's trail by close-circuit television and uncover the buried treasure using a homemade metal detector. Bite Mark Biscuit To discover who stole the cookies from the kitchen, Holly and Harry examine a suspicious bite mark. Can dental detail solve the crime? Typewriter Love Notes Someone has left a letter in India-Blue's locker. It contains a message written in code. A typewriter was used, which gives India-Blue and Laura-Mae the vital clue in their investigation. Matching the message with the typewriter will reveal the identity of the note's author. Animal Scat Patterns A banana has gone missing from the kitchen. T