12 - Dark House by George Manville Fenn

In the mysterious tale of Dark House, an enigmatic and affluent recluse passes away, leaving behind a peculiar will that suggests the existence of immense wealth hidden somewhere within his mansion. The beneficiaries, mostly strangers who had been recipients of the deceaseds goodwill, commence a thrilling hunt for the hidden treasure. The plot thickens as a series of untimely deaths occur, keeping the listeners on the edge of their seats until the final chapter. The cunning individual who eventually unravels the mystery of the hidden treasure does not appear until the end and even then, a trip to America delays his crucial revelation. This suspenseful saga keeps you guessing until the last moment. (Summary by Gutenberg)