When Flick and Joey spot a poster asking for help to find a 'mysterious lost box', their ordinary day takes a dangerous turn, plunging them into a magical world beneath their school: Shinglepits High.

As they soon discover, below their home city of Edinburgh lies a powerful river of magic, known as a 'Ley Line', which is set to wreak havoc when it transforms a pile of forgotten books into a tiny yeti, a miniature alien... and a full-sized evil witch with a thirst for misery.

Will they solve the clues and find the mystery box in time?

Find out in this exciting mystery adventure, full of friendship, bravery, and imagination. All you have to do is turn the first page...