Evil Within (End)

"Sound-based weapons?" The sudden turn of events immediately made Shen Fei think of sonic weapons. With modern technology, weapons had developed tremendously—chemical weapons, biological weapons, sonic weapons—all far beyond ordinary people's imagination.

Although sonic weapons were not as destructive as chemical or biological weapons, their concealment was utterly unmatched by other weapons, because ordinary people could not hear ultrasound or infrasound.

In modern society, sonic weapons had already been widely used—for driving birds away from airports, suppressing terrorists, dispersing protesters, rescuing hostages, and more. Flashbangs, for instance, were a type of sonic weapon.

Ross had once used sonic weapons against the Hulk. Though he had ultimately failed, it still proved that sonic weapons had some effect even on the Hulk, however minor that effect might have been.

Of course, while sonic weapons were powerful, because of the nature of sound and the limitations of current science, their destructive force was not actually that great. They could only be effective at close range; once the distance became too great, their effect was drastically reduced.

However, because of their concealment, sonic weapons were extremely difficult to trace when used in crimes, especially crimes that exploited the traits of organisms found in nature.

Shen Fei had heard Yakushiji Ryoko mention a criminal who had used sound to make people commit suicide. He had been a scientist studying biology who had accidentally discovered a creature capable of producing strange sounds, then used modern equipment to amplify those sounds.

At first, the police had not suspected murder at all and had handled the cases as suicides. It was only when the man grew increasingly brazen and caused more and more deaths that the police began to suspect something was wrong. After an investigation, the culprit ultimately suffered the consequences of his own actions.

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