Scene of the Crime — Episode 4: Kielwasser

You are watching the episode Kielwasser Dr. Waldorf, a physician is found murdered in his office. Suspect is Baumgarten, the director of the waste recycling company on whose behalf several of the doctor's patients, had regularly shipped cargoes of toxic waste, is also killed. The motive seems clear: a cover-up of criminal environmental pollution on a large scale. But who were the perpetrators?