一个凶杀案悬在那里已经3年了,还没有侦破,虽然经过多方调查,警署已经发现了一些蛛丝马迹,并认为约翰最可疑,但是没有确切的证据证明,警署不能下逮捕令。后来一位警员杰克好像突然意识到了什么,他买来一瓶鲁米诺(一种苯胺类化学物质),把鲁米诺与碱性物质和双氧 It has been three years since a homicide was suspended and has yet to be detected. Although after many investigations, the police station has found some clues and considers John the most suspicious, there is no conclusive evidence that the police station can not arrest the arrest warrant. Later, a police officer Jack suddenly realized something, he bought a bottle of luminol (an aniline chemicals), the luminol and alkaline substances and dioxygen