A superb book for the transition between reading programmes and novels for pre-teenage children - appreciated as this is not so well served at present. Continues the surprisingly effective blend of visually evocative writing, fantastic but logical multi-threaded plot, and resonant illustration found in all the Stewart/Riddell books, but manages to use simpler elements accessable to younger children without disturbing the balance (possibly even improving it). Proved to be an excellent bedtime read for a five year old.