Michael Murphy

Himself - Narrator (voice)

Andrea Barrett

Herself - Writer

Andrea Cooper

Herself - Immunologist

Joanne Curtis

Herself - TB Survivor

Sherwood Davies

Himself - TB Survivor

Mary Hotaling

Herself - Writer

Peter Pringle

Himself - Writer

Sheila Rothman

Herself - Author, Living in the Shadow of Death

Vivian Schatz

Herself - Wife