无形杀机

An isolated private investigator is convinced by a friend to come out of hiding to help find her missing sister, putting him back in reach by those who want his family dead.大楼内有一道人影扭曲了一下，立刻消失不见了，紧接着周围响起了一声凄厉的怪叫，这怪叫很可怕，不像是人可以喊出的声音，如同一只未知的厉鬼在发出恐怖的嘶吼。