A loader plunged from a nine-meter spoil heap, killing a miner on the spot.
When his daughter called the police, she sobbed so hysterically she could barely speak. But Detective Li felt something was off: her crying was too flawless, as if she'd rehearsed her lines.
The phone shattered at the scene looked nothing like it could have broken in a vehicle fall.
And the coal mine didn't call emergency services until two hours after the fall.
It seemed everyone was covering something up, hiding something. In this so-called "accident," perhaps no one was innocent.