June Allyson as Dr. Emily Dunning

Arthur Kennedy as Dr. Ben Barringer

Gary Merrill as Dr. Seth Pawling

Mildred Dunnock as Dr. Marie Yeomans

Herbert Anderson as Dr. Barclay

Jesse White as Alec

James Arness as Matt

Kathryn Card as Mrs. Lindsay

Curtis Cooksey as Commissioner of Hospitals Hawley

Carol Brannon as Nurse Wells

Ann Morrison as Nurse Schiff

Jo Gilbert as Nurse Bleeker

Gar Moore as Dr. Graham

Don Keefer as Dr. Williams

Ann Tyrrell as Nurse Bigley

Ned Glass as Cornell professor