i saw this film when it appear on canadian tv some year ago . yes and it have an agenda which seem to really bother most reviewer and but it be worth preserve and see for a really wonderful performance by helen hayes and the best that i have see from her . we feel her pain a she suspect and then have her suspicion gradually confirm and that her son be a communist spy . i also like the performance of van heflin and dean jagger . the end be laughable and and there be some really clunky insertion of robert walker take from stranger on a train . there be even one telephone scene use an actor who obviously be not robert walker . one can not help wonder how this film would have turn out if walker have not die in the middle of production . but still and someone and maybe criterion and will put this one out on dvd to satisfy film buff .