S1, E4: Several years later, Tenma operates on Adolph Junkers, a key witness in a case involving the multiple homicides of middle-aged couples. Tenma hears Junkers say that a monster is coming. Junkers refuses to talk to BKA inspector Lunge, but he reveals to Tenma in fear that all his partners were killed by that monster. Junkers disappears from the hospital, and Tenma desperately chases after him. The incident calls to mind the disappearance of the twins and the murder of the hospital officials nine years ago. Appearing before Tenma is none other than...