Arthur Roberts was 34 in The House That Cried Murder when he played the character 'David'.
That was over 49 years ago in 1973.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 84, and has starred in 61 movies in total, 60 of those since The House That Cried Murder was released.
In The House That Cried Murder, I think Arthur Roberts looks: