Title: The Mystery of the Spiteful Letters, The Mystery of the Missing Necklace, The Mystery of the Hidden House
First published: May 5, 1994
Description: Three books in one!

Book 4 - *The Mystery of the Spiteful Letters*
An adventure for the Five Find-Outers and their dog. Fatty, Larry, Daisy, Pip, Bets and Buster become involved in a very peculiar situation when a series of unsigned letters are sent to various people in Peterswood.

Book 5 - *The Mystery of the Missing Necklace*
Who could be burgling the village's jewels? There is a gang of thieves using Peterswood as their headquarters! Luckily, Fatty's disguises are better than ever -- no one recognises him as a balloon seller or the old man in the village. He is just the person to get the Five Find-Outers to the bottom of this mystery.

Book 6 - *The Mystery of the Hidden House*
Where could Mr. Goon's nephew have disappeared to? Mr Goon has forbidden the Five Find-Outers from solving mysteries -- so they decide to make one up for his nephew, Ern! But what will happen when Ern disappears, and their pretend mystery turns into a real one?
Subjects: Detective and mystery stories, English fiction, Juvenile fiction, Children's fiction, Mystery and detective stories