DeForest Kelley was 26 in Fear in the Night when he played the character 'Vince Grayson'.
That was over 77 years ago in 1947.
In 1999 he died aged 79, starring in 43 films in his career, 41 of those after Fear in the Night was first released. If he were alive today he would be 104.
In Fear in the Night, I think DeForest Kelley looks: