[Machine Translation] A mysterious letter was sent to the Metropolitan Police Department from a person claiming to be the "Devil's Hand. The letter contains a threat to commit a series of murders and a provocative letter naming Manabu Yukawa, an associate professor at Teito University, as the target. What is the aim of the murderer who is targeting Yukawa? What is the horrifying method of murder that transcends common sense? This is the fourth installment of the extremely popular series that depicts the confrontation between an evil criminal and a genius physicist on an overwhelming scale.