When Yang Tianchen woke up, he found himself standing in a moving train carriage.
There was endless darkness outside the window, and there were six people sitting in the carriage who were as dazed as him. A note fell at his feet:
"This game: Find the bloody killer. The murderer is among you. Find the real culprit, or be buried with everyone. Countdown: six hours."
He has no force or foreign aid, only a mind that is good at insight into human nature.
Seven suspects, a secret room murder case, and a six-hour life or death time limit. When logic became the only weapon, Yang Tianchen discovered that the most terrifying thing was not the murderer. But this train was heading towards an end that he could not imagine.
