The first in a new children's fantasy adventure series, full of imagination, humour and heart, and with echoes of Peter Pan, The Chronicles of Narnia, The Neverending Story and Jumanji.
With Sophie still missing in action after their explosive mission in Paris, Lil decides to take matters into her own hands. On a new mission for the Secret Service Bureau, can Lil find Sophie in misty, mysterious St Petersburg?
Can they uncover the identity of their true enemy and can they trust anyone - even the Bureau?
Luke's dad has bought a lot of gadgets recently and not one of them works as it's supposed to. Luke knows what he must do - he just needs his fellow SCARF members to help or it will be the end of everything...
Cover artwork by Robin Boyden