Solve the Case, Sure, But Why Are You Summoning Spirits?

Jiang Chen, a folklore master's graduate, joins the criminal investigation squad. While everyone else solves cases with DNA and surveillance footage, he uses the Classic of Mountains and Seas and the Records of the Washing Away of Wrongs. When a “Red-Clad Bride Claims Her Victims” case comes up, he actually summons a “ghost” to question it, and the whole squad loses its mind.