A shrieking, killing nightmare erupts from an overgrown well, hidden in the grounds of an old house, Tranchard's Folly - and Mary Shelley, the Doctor's latest travelling companion, rescues teenage twins Finicia and Lucern from the clutches of the monster.
But a TARDIS trip in search of the origin of the horror goes terribly wrong...
- Format: CD-Audio
- Publisher: Big Finish Productions Ltd
- Publication Date: 30/11/2011
- Category: Science fiction
- ISBN: 9781844356027