The opening quote - "For me there are neither locks nor bolts, whatsoever I desire is mine." - comes from the fairytale "The Master Thief".
The letter from the Office of Strategic Services is signed "W. Donovan." William "Will Bill" Donovan was the director of the OSS during World War II. He was also a World War I Medal of Honor recipient and co-founder of the Central Intelligence Agency.
Throughout this episode, the coroner, otherwise known as Harper, is referred to as Parker.
The Newspaper article referring the the crash on Highway 9G is attributed C David Hall-Cottrill. cdavid cottrill was Property Assistant on this episode.
Events in this episode occur approximately four months after Marie Kessler's death.