Twelve-year-old Alura the sleuth is always on the case. With her sleuthing notebook in hand, Alura is constantly scribbling down notes about her many investigations.

With her best friend, Kim, by her side, Alura plans to become a detective one day. In the meantime, they investigate and solve mysteries at school; like why has their favourite teacher, Miss Thompson, been absent for over three weeks?

Meanwhile, another mystery is brewing: Alura's cousin, Jeremy, finds the skeleton of a young girl wearing a blue dress hidden in his family's barn. Who was this girl and what happened to her? There can only be a few suspects. This turns out to be Alura's biggest, and most challenging, case yet. She's up to the task, but will she ever solve this mystery?