Really enjoyable thread. (Until the 9/11 tit for tat took over)
My favorite mysteries have been covered earlier in the tread, so here's a little doozey from reddit..
Circleville is a small city in Ohio that has a population of over 13,000. Its biggest event is the annual Circleville Pumpkin Show. It is also the home of a mysterious letter writer known as the Circleville Letter Writer. Starting in 1976 residents of Circleville began receiving mysterious, vindictive letters. Thousands of letters, written in block letters were sent to city officials and even normal citizens. One recipient of the letters was school bus driver Mary Gillespie. She received letters accusing her of having an extra-martial affair with a school official. On August 19, 1977 Mary’s husband Ron Gillispie received a phone call seeming to indicate the identity of the writer. He left his house with his gun to confront the writer. He was found dead a short distance from his house. His car was driven off the road and his gun had been fired once. He died as a result of the crash and it is unknown why he fired the gun. It is unclear if it was an accident or murder. Later, while driving her bus, Mary saw signs along her route harassing her. She went to take one down and discovered a booby-trap meant to fire a gun at her. The gun belonged to her former brother-in-law Paul Freshour. Freshour was convicted of attempted murder and was thought to be the Circleville writer. However, while incarcerated the letters continued despite him being in solitary confinement without access to letter writing material and his mail being monitored. He was denied parole because of the letters and received one himself after his parole was denied.