Dan Holiday, a mystery novelist who advertises for adventure, receives a letter that leads him into a chilling mystery involving a secluded mansion, eerie occurrences, and a secret that someone is desperate to keep hidden.

Holiday arrives at the House of Darkness, a mansion with a sinister reputation. The residents seem fearful, and strange events unfold—whispers in the night, locked doors, and a growing sense of danger. As Holiday investigates, he uncovers a hidden truth about the house’s past and the real reason someone wants to keep it shrouded in secrecy.

This episode is a classic Box 13 suspense story, blending mystery, psychological tension, and Holiday’s sharp detective instincts.

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Chapters

• (00:00:07 ) - Blind Letters in the Library
• (00:01:13 ) - Box 13
• (00:04:04 ) - The Braille Message in the Library
• (00:07:04 ) - The Dr. Holliday Case
• (00:10:17 ) - Dr. Folci in the Blind Man's Office
• (00:13:02 ) - The Power Company inspector visited the house
• (00:14:13 ) - How to Get into a Locked Room
• (00:17:12 ) - blind man held in the house
• (00:20:16 ) - Dr. Whitley Had a gun in my back.
• (00:22:48 ) - Blind Men in the Army
• (00:26:05 ) - Box 13