It's always good when you stop by, Mark! I think Eddie Muller screened the 3-D version of this a few years ago as his NC Xmas feature.

Dan Riss is another of those semi-anonymous character actors who managed to carve out a sizable career with a minimum of fanfare. He worked up a pretty solid little noir resumé:

1950
Appoinment with Danger • Panic in the Streets • Kiss Tomorrow Goodbye • The Killer That Stalked New York
1951
The Enforcer • Fourteen Hours
1952
Talk About a Stranger • Confidence Girl
1953
Man in the Dark • Vice Squad
1954
The Miami Story • Human Desire
1956
The Price of Fear
1958
The Case Against Brooklyn

He pretty much became typecast as a cop, but MAN IN THE DARK shows that he could stretch a bit if someone decided to give him a chance. I believe he had a few villainous roles in westerns...