When the narrator and his companion camp on a remote island, they think they see a body in the water and a man calling to them. But that's just the start of this clawing claustrophobic tale of suspense and mounting terror.
Read by Roger Allam.
Algernon Blackwood's chilling tale has been described as one of the finest supernatural stories ever.
Producer: Lawrence Jackson
Made for BBC 7 and first broadcast in 2005.
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