(DeCandido's novelizations of the Anderson films)
Mary was born to an East German family in Berlin. After the death of Anthony's mother, her father decided the whole family had to leave. Securing a way to the United States, they changed their name to "Cain", translated from their German name.
In the 1990s, Mary divorsed her husband due to infidelity. Her brother, Timothy, fresh from the Gulf War, paid for her lawyer to help her keep the money. He then tracked down the man and killed him in South Bend, Indiana.