Tom loves his little sister, Alice. But he can't help thinking she is a bit strange.
There are her terrible nightmares for a start. And the way she keeps insisting that she's not Alice . . . she's Alison. Is it just that Alice has a vivid imagination as the doctor says? Or is there something more to it? And can Alice's ramblings possibly have anything to do with an unsolved murder which happened almost twenty years ago?
This intriguing psychological mystery is told with all the humour and pace for which this author's novels for younger readers are renowned.