Mystery Sleuth Fights Crime Anonymously

A mystery sleuth has helped police tackle a range of crimes by sending them over 200 tip offs.
The letters, always typed in black on white paper, have been sent over the past year and have given police enough information to carry out drug warrants, catch road tax dodgers and non TV license-payers.
There are a number of theories as to their identity, with some suggesting they could be a retired policeman or even a crime novel enthusiast.
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