When her private investigator dad goes missing, Annie will need all the help she can get to solve the mystery … A funny and intriguing spy caper from an award-winning author.

Annie's dad is a private investigator. She's used to mysterious things going on, but when a string of visitors come to her dad's office, it results in the most mysterious event of all – her dad has disappeared! Annie knows something is wrong and she enlists the help of her friends Matt and Ruth to follow a trail of very sticky clues…

Particularly suitable for readers aged 7+ with a reading age of 8.