Few believed Professor Coldwell was in touch with an unseen world, that he could commune with spirits. But in Scotland's oldest university town something has passed from darkness into light. And now the young are being haunted by night terrors. And those who are visited disappear.

Few believed Professor Coldwell was in touch with an unseen world, that he could commune with spirits. But in Scotland's oldest university town something has passed from darkness into light. And now the young are being haunted by night terrors. And those who are visited disappear.