Victim's personal chauffeur. Confesses to the murder during cross-examination, claiming the accident happened when the suspect fled the scene. Later revealed to be terminally ill and likely coerced or bribed to serve as a scapegoat for the real culprits.
A chauffeur-client relationship places Sun Wei near the murder investigation.
Sun Wei is described as Yang Dan's personal chauffeur and is examined about the circumstances of her death.
Lin Tai allegedly manipulates the chauffeur into serving as a false culprit.
Tong Tao suspects that Lin Tai bribed the terminally ill Sun Wei to take responsibility for the murder.
Their courtroom interaction produces the first apparent solution to the case.
Zhou Li cross-examines Sun Wei and leads him into confessing to Yang Dan's murder.
Tong Tao tests the credibility of the chauffeur's testimony.
Tong Tao examines the circumstances of Sun Wei's confession and has staff verify that Sun Wei has terminal brain cancer.
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