Beware the Gingerbread House — Emily Rodda

Another crime-busting adventure from the internationally bestselling author of Deltora Quest!

Sunny has always been terrified of the Gingerbread House, a peculiar pastry shop with a giant cage for trapping naughty children. Now she's been asked to lend the place a helping hand!
The rest of the Help-for-Hire crew quickly agrees with Sunny, as soon as they discover a not-so-sweet surprise: Somebody's putting dead things in the tasty treats. And the team's fractured fairy tale is only just beginning. . . .
Sunny and her friends have to act fast. Nobody wants the Gingerbread House to crumble - not if Help-for-Hire will take the blame.