Although many credit this as Sidney Poitier's film debut, he had previously made three short films for the U.S. Army Signal Corps. However, this was his first credited appearance in a commercial feature film.
After Dr. Brooks retrieves the spinal tap tray from the cabinet and heads back to the ward where Ray and George Biddle are being treated, the shadow of the boom microphone can be briefly seen on the wall upper left on the screen.
Dr. Dan Wharton: We wanted to examine your ex-husband's body. To make sure he died from the causes we think he did. We're not permitted to without permission of the family.