In the mist-shrouded London of the Victorian era, a bizarre locked-room murder involved private detective Elliott Grant and his keen assistant Noel Weston into a mystery that transcended life and death.
On the Northern Star Express, wealthy businessman Alfred Charlton was strangled to death in a locked compartment. All suspects have perfect alibi. The only clue is a mysterious pocket watch from the East - it can play back the last three seconds of the deceased's life after he passes away; it can also send out a silent vibrating warning before death comes.
Eliot relied on calm rationality and meticulous reasoning to pursue the material truth in the web of lies; Noel relied on extraordinary emotional intuition to touch the malice and secrets hidden deep in everyone's heart. However, they gradually discovered that this case was not only a game of human nature, but also closely related to the fate behind the pocket watch that had been entangled for hundreds of years. The whisper of Devin Harrow, the traveler from the East, was like a prophecy of fate:
"The sealing... Has begun."
When the train breaks through the blizzard, the mystery is revealed, and the true price has just emerged. What the pocket watch chooses is never just the truth, but also the souls destined to sacrifice to seal it.
