Before she died, Dors apparently hid away what she claimed to be over £2 million in banks across Europe. In 1982, she gave her son Mark Dawson a sheet of paper, on which she told him was a code that would reveal the whereabouts of the money.
[1] Her widower Alan Lake supposedly had the key that would crack the code, but as he had committed suicide five months after Dors' death, Dawson was left with an apparently unsolvable code.
[1][14]
Dawson sought out computer
forensic specialists Inforenz, who recognised the encryption as the
Vigenère cipher. Inforenz then used their own cryptanalysis software to suggest a ten-letter
decryption key, DMARYFLUCK (short for Diana Mary Fluck, Dors' real name).
[1] Although Inforenz was then able to decode the entire message and link it to a bank statement found in some of Lake's papers, the location of the money is still unknown.
[1][14]