A broken body is found in the plaster of the studio. Was it a murder caused by love or lust? Was it a murder of passion or was it premeditated? Is the murderer a man who gets what he wants, or is he unwilling to abdicate? Why do seemingly skilled anatomy techniques lead to the formation of multiple skin flaps in wounds? Complex relationships, strange evidence, and what is the murderer's purpose? It is not funny for children to be afraid of the dark, but it is scary to be afraid of the light! There is more than one case in this article, and the author will focus on the loopholes of each case to make it reasonable. The author himself is not a medical or legal researcher, so please forgive me if the wording is inaccurate! The characters of this article are the same as the forensic doctor Qin Ming. This is not considered plagiarism. The three people also include scholars of traditional criminal investigation and criminal psychology. It is also not considered plagiarism from Ding Mo. After all, these people are indeed needed to solve the case. If this is considered plagiarism, the author of this type of article will have to jump into the river.