In this world, there is no absolute black and white. Not everything is bad. On the contrary, not everything is good. Under the oppression of modern life, people sometimes have some extreme thoughts. It is their extremes that create the source of stories for the authors. Reasoning, what is reasoning? As the name suggests, reasoning is to use your imagination to solve puzzles through reasoning (mostly to find the murderer). This novel contains many complicated and confusing cases. Just like the name of the novel, it is complicated and confusing, and the ending will often be different from what you think. Everything is possible. Nothing is impossible, only you can't think of it.