黑色物质是宇宙中看不见的部分。虽然看不见,它们却会侵害区域内的其他物质。一起不同寻常的大厦纵火案引起了社会的广泛关注和诸多猜测,楼主斯万先生成为众矢之的。俗话说,人为财死。纵火案背后牵涉着受害人的巨额保险金,凶手究竟是谁? Black matter is an invisible part of the universe. Although invisible, they do harm to other substances in the region. An unusual building arson caused widespread concern in the community and many speculation, the landlord Mr. Swan became the target of public criticism. As the saying goes, people die financially. Behind the arson case involves the victim’s huge insurance, who is the murderer?