A spine-tingling mystery combines with elements of the supernatural in this thrilling title.

Dory is on holiday on the moors with her family when she stumbles across a Victorian walkers' 'letterbox' and a faded message for a boy called Eli.

The message opens a slip in time and soon Dory is battling alongside Eli to help save his sister from her cruel father.

But is there more to Eli - and his gift of a Victorian heart pendant - than meets the eye...?

Particularly suitable for struggling, reluctant and dyslexic readers aged 12+