A twelfth birthday takes a very unexpected turn when a girl finds herself at the centre of a plot to save a community from the brutal Corvus ruleHow do you find your way out of the dark?On her twelfth birthday, the last thing Cecilia expected was to find herself lost in a labyrinth of tunnels beneath London.

Afraid, alone, but determined, she sets to work on her escape, and soon realises that perhaps there is a reason she and the mysterious marble her sister gave her have ended up so far from home.Deep in the darkness roam the terrible Corvus, tyrants of the magical realm below.

Cecilia's struggle to return to her family becomes a mission of great danger and adventure, as she tries to help her new friends to freethemselves and their beautiful, unique world.

But will her brave heart be enough to ensure she doesn't stay trapped in the darkness for ever?Nadine Wild-Palmer is a children's author, singer-songwriter and poet born and bred in south west London.

You may have heard her on Channel 4 as a continuity announcer or seen her rearranging the books as a children's librarian.