An incident happened in an inland town. An innocent child died oddly in an inn. His mother was injured badly too. A doctor injected the drug into her arm to help her calm down. Since no other people were present, the mother was suspected. The suspicion was a severe injury to her heart. Losing the son caused instability of her mood. An inspector was sent to inspect it. He was a man of deep insight. He inquired the way of a local person. Upon inquiry, he learnt that the inn was near an inlet. The police had blocked the inlet to the inn. A policeman took the inspector to an inner room. He inserted the key into the lock then opened it. The inspector saw the woman. She insisted on her innocence. The inspector's inner feelings told him that she was innocent. The woman said that on that night they were sleeping when innumerable insects flew into the room. Then she lost her consciousness. The inspector inputted the information of the insects into a computer. He found out that the insect was the killer! It was a kind of poisonous insect. To avoid more tragedies, the inspector initiated an innovation. He was the initiative person of the innovation. His wife was a constant inspiration to him. Inspired by the lamp, the inspector installed an electrical installation to attract that kind of insect. Once it touched the installation, it would die.

　　一个事情发生在内陆的一个小镇。一名天真的孩子在一个客栈蹊跷地死了。他的母亲也受到严重损伤。一名医生在她的手臂上注射药物帮助她镇静。因为没有其他人在现场，这位母亲受到怀疑。这种怀疑对她心灵是严重的伤害。失去儿子造成了她情绪不稳定。一名检查员被派去调查此事。他是一个很有洞察力的人。他向当地人询问道路。在询问之后，他知道了客栈在一个水湾附近。警方已经封锁了客栈的入口。一名警察带检查员去了一个里面的房间。他插入钥匙打开了门。检查员看见了那名妇女。她坚持她的清白。检查员内心的感觉告诉他她是无罪的。妇女说，那天晚上他们在睡觉时有无数的昆虫飞进房间，然后她失去了知觉。检查员把昆虫的信息输入电脑。他弄清了昆虫是真凶!它是一种有毒的昆虫。为了避免更多的悲剧，检查员发动了一项革新。他是这项革新的创始人。他的妻子一直鼓舞他。在电灯给予的灵感下，检查员安装了一种电子设备来吸引那种昆虫。一旦它碰到装置就会毙命。