The Keeping Place (The Obernewtyn Chronicles #4)

'Look out,' I screamed. The flying creature lashed out and I stared in horror at Rushton's bloodied arm. Maruman leapt between us in his tyger form. 'Let me go to him!' I screamed.
 
'He is in a dream but the beast is not. It comes! Wake!'*
 
After a kidnapping, Elspeth Gordie and the Misfits are forced to join the rebellion against the oppressive Council, using their extraordinary mind powers. But Elspeth must also seek out clues left by the long-dead seer, Kasanda, vital to her quest to destroy the Beforetime weaponmachines. One clue is lost in the past, forcing Elspeth to travel the Dreamtrails, stalked by a terrifying winged beast, with the cat, Maruman, as her guide and guardian. Only there can she learn more of the Beforetimer Misfits and their enemy, Govamen.

Gradually Elspeth realises her quest is intimately linked to the Misfits' refuge, Obernewtyn - its past and its future...