Books in Oxford Fantasy series

The great house has become a dangerous place since the naster mysteriously vanished. Wolves prowl around in the snow outside, hungry and howling, while inside the house, the horrible Aphid Dunn has taken charge. Everything seems to be falling apart. Esther and the boys are wondering if thingscan get any worse, when they discover a whole new world under the house. there might still be one last chance of freedom after all...

Far below the Antarctic ice, the folk of Atlantis have lived in safety for centuries. But when a boy called Mungith makes an unbelievable discovery in the old mines, the Atlantans' lives are suddenly in great danger. Then tragedy hits the kingdom, and Mungith knows he will be blamed-unless hecan somehow restore peace and wellbeing to his people... First published in 1997, this novel is now reissued in a smaller mass-market paperback format.