Narrator

Himself - Professor of Medicine - Expert on Kuru

Professor in Medical Anthropology

Medical Reporter - PNGIMR

Himself - Virologist - Anthropologist - Linguist - Author - etc

Brother

Himself - Director, Institute of Human Virology and Co-discoverer HIV

Himself - Professor of Neurology and Author

Secretary

Himself - Former Professor of Mathematics - Yale and Princeton (as Benoit Mandelbrot)