Fred Johnson looks exactly like one character in "Inner Sanctum" (1948)
I just started watching "Inner Sanctum" (1948) and in the first scene there is a man called Dr. Valonius who looks exactly like Strasberg's dead father in "Scream of Fear".
So I stopped the movie and just checked the imdb to see if he also played the dead father of Susan Strasberg in "Scream of Fear" (my favorite Hammer movie).
But Fred Johnson lived until 1971, the actor who played Dr. Valonius in "Inner Sanctum" already died in 1949. His name was Fritz Leiber. They look so similar, they could have been twins!
Same eye brows, same gaze.