Book 2

The Black Room

by Gillian Cross

Published 1 January 2001
Robert is determined to rescue Lorn, who remains trapped in the tiny underground world from which he has managed to escape. She'll die if he doesn't help her. But Lorn doesn't know what danger she is in. Something is drawing her to the dark tunnels underneath her world. Is it something that is calling her home or something more sinister? Can Robert get to her before whatever lurks in the black room does? Gillian Cross is one of the UK's top children's authors, and has won a host of major prizes, including the Carnegie Medal, the Whitbread Award, and the Smarties Prize.

Book 3

The Nightmare Game

by Gillian Cross

Published 1 February 2007
Robert tries to get answers from Magee, the strange man he met on the airplane, and works with Tom and Emma to try to rescue Lorn and the others before winter arrives, while Lorn takes it upon herself to find answers and a way to escape her past, if not her present, captivity.