The Murder of the Black Bishop

The first victim was shot through the heart with an arrow, the second victim was shot through the head with a gun, and the third victim fell from a high wall to death... The cruel murderer named "Bishop" continued to provide clues deliberately, and a series of chilling and bizarre murders were completely consistent with a well-known ancient nursery rhyme! ——Who killed the little robin? "It's me," the sparrow replied. "I shot the little robin to death with a bow and arrow!" The dark, gloomy nursery rhyme is like a ghost song composed by the devil, foreshadowing scenes of bloody tragedies. The shadow of death instantly enveloped the entire New York... Who is the black bishop hiding behind the scenes? Why does he commit murders and provide clues, looming like a ghost? What huge conspiracy is hidden in everything?