Based on the lives of Albert and Thyra Johnston, who lived in New Hampshire in the 1930s and '40s.
Dr. Carter is shown traveling by US Coast Guard boat from Portsmouth, NH, to the Isle of Shoals, about six nautical miles from the city harbor. However, when the boat arrives at its destination it is actually the Cape Neddick Lighthouse station (a.k.a. the Nubble) just off the coast from York, ME. The house the doctor is shown entering is the lighthouse keeper's residence.
Parker W. Fennelly (Alvin Tupper) appeared regularly on radio's "Fred Allen Show" as the character "Titus Moody." His first line was almost always "Howdy Bub!" It is also his first line in this film.
Film debut of Carleton Carpenter.
Final film of Lee Nugent.