These clips have been edited from the film. I compared it to my DVD. The lack of description of physical action should have been a givaway. For example; in the first clip, Lugosi says to Karloff "You don't need that." In radio they would have said "You don't need that GUN." or there would have been the sound of a gun cocking and possibly a short, dramatic music cue. Even if you could figure out what they are talking about, shows were always written so that EVERYBODY knew what they were talking about.
I love the old Universal horror films, so it was fun hearing these clips. Karloff did a lot of radio. Horror, mysteries, and guest appearences on comedy programs. Lugosi did very few, and they are hard to find.

I've yet to listen to this (but will review when I have), however this was first broadcast in 1935 and is most defintely OTR.

If this is otr(I am thinking it is not) the programmes would be longer and not leave the listener hanging at the end with Bateman (Boris Karloff) horribly disfigured by a sadistic doctor
(Bela Lugosi) who makes him pull another job of murder.