This series is mainly seek and find, following two young detectives solving puzzles in various places. It differs from other seek-and-find not only in being more 'detective' focussed but also having pull out sized posters for readers to view as they solve the puzzles. From the book description:

"In this book, you can investigate with Prune, Propser and Fido, the dog. Help them look for clues in the pictures on every page and in the big pull-out picture. Answer the questions and solve the puzzles. Open the book and unfold the pull-out picture... an exciting advenure is beginning!"