Cast
Robert Donat
Dr. Andrew Manson
Basil Gill
Doctor Page
Cameron Hall
Man Who Buys Microscope (uncredited)
Penelope Dudley-Ward
Toppy LeRoy
Harry Terry
Miner (uncredited)
Edward Chapman
Joe Morgan
Felix Aylmer
Mr. Boon
Joss Ambler
Dr. A.H. Llewellyn
Kynaston Reeves
Doctor (uncredited)
Nora Swinburne
Mrs. Thornton
Percy Parsons
Mr. Stillman
Joan Kemp-Welch
Nurse Assisting at Childbirth (uncredited)
Gus McNaughton
Tom Evans (uncredited)
Francis L. Sullivan
Ben Chenkin
Bryan Herbert
Husband Whose Wife Has Typhoid (uncredited)
Bernard Miles
Medical Aid Society Committee Member (uncredited)
Leslie Phillips
Girl (uncredited)
Rosalind Russell
Christine Manson
Mary Clare
Mrs. Orlando
Cecil Parker
Dr. Charles Every
Athene Seyler
Lady Raebank
Eliot Makeham
Jack the Pharmacist (uncredited)
Ralph Richardson
Dr. Philip Denny
Rex Harrison
Dr. Frederick Lawford
Emlyn Williams
Owen