Dr. Hawver, a doctor visits his relatives for spending a summer. But due to some problems he was not able to stay in his relative's house, rather he stayed at another house where some other Dr. Mannering was living. But no one knew where Dr. Mannering is now.

Dr. Mannering was a brilliant doctor who could forecast death in advance of several months. One night, when Dr. Hawver was passing through the study when he felt something unusual. He saw Dr. Mannering coming towards him from his portrait lifting his right forefinger like a warning and vanished in thin air.

Was Dr. Mannering alive or it was just an apparition? Against what Dr. Mannering was warning Dr. hawver?
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