This was a TV series based on the radio program of the same name. It features the original Dr. Christian's nephew Thomas because the original actor, Jean Hersholt, was terminally ill and died only hours after filming the second episode. The series, which aired in 1956, now appears to be Lost.
Dr. Christian is the main character of this series, which is based on the radio series of the same name, which starred Jean Hersholt as the original Dr. Christian.