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I took a taxi home in the middle of the night, and the taxi driver was beheaded in the early morning. All the evidence showed that I was the murderer, including the fingerprints on the murder weapon, the bloody clothes, and the surveillance cameras at the scene. However, I never left the house at all. Who was setting me up? The forensic doctor who performed the autopsy on the deceased cut off his own head at home, leaving the whole case unsolved...