The Troubleshooters S05 E15 Doctor Liebling, I Presume

Papuan headhunters are not a common danger to Mogul. But they are only one of the hazards Peter Thornton has to face. Why does the Australian District Commissioner try to stop him going to see Dr. Liebling? And what is Dr. Liebling doing there anyway? It takes a terrifying experience to clear up the mystery.