Audio fades in and out a little. The story opens with a man who phones Mr Keen for help, and is murdered while he is still on the phone. Before the call goes through, he is strangled. Shortly afterward, the man’s brother goes to Mr Keen’s office to relate all the details.
The man lived alone, was an eccentric, and had a huge estate that somebody stands to inherit. The brother gives Mr Keen the keys to the house so he can spend the night in the big spooky mansion alone. Mr Keen holds some suspicions towards the brother, and wants to go on the fact finding mission alone.
Mike Clancey and Mr Keen are surprised to find a woman staying in the house. They play it quiet to see what they might learn from her. She also has a claim in the will of the dead uncle. Next thing you know, more people start showing up. A woman from town who had expectations of buying the mansion, and a mentally challenged man. There’s a gunshot, a scream, and one of the strangest cases that Mr Keen has ever been put to task to solve.
A secret of a hidden treasure is revealed from the mentaly challenged man, but is there anything to it? Mr Keen sees his chance to set a trap for the killer, but only part of the mystery is solved. The deathbed confession sheds light on all the mysterious happenings.