Inspector Lunge investigates the murder of a prostitute and suspects a senator named Dr. Boltzmann of involvement. His dedication to his work however takes a toll on his family life.

Meanwhile, the vindictive Eva continues to press Lunge to catch Tenma. She also has a new lover, her garderner.

Lunge determines that the murder of a wealthy, middle-aged, childless couple does not fit the usual modus operandi of the serial murders and decides to use this opportunity to lure Tenma to a trap. However, before he can arrest him, Lunge is critically wounded by the real criminal. Tenma is able to treat Lunge's injuries.