Two years after the death of Dr. Black and arrest of the murderer, Mr. Meadow-Brook has ended up in possession of murder victim's belongings. Mr. Meadow-Brook begins a black market auction in order to sell these precious items, inviting right guests to join him. However, after the power suddenly shuts down, Mr. Meadow-Brook is found dead. Mrs. Meadow Brook, the eight guests, and the various staff begin an investigation to uncover the culprit.
