I think one of the more unsung actors of his time was Dan Duryea. He was flexible...able to play heroes or villains with great skill...particularly the villains. So he's perfect in this episode of "Suspicion" because it calls for a cold, calculating and evil villain...the sort of guy he really excelled at playing.
Eddie (Duryea) is one of the top bank robbers in the country. This is because he takes nothing for granted and is careful that no one ever learns his true identity...that of a cattle rancher. And through the course of this show, you see just how brilliant and meticulous he can be in planning a caper. There even is a slight hiccup when one of the gang members recruited for this job knows who Eddie really is...and he needs to make sure that guy never spills his guts. But what about the intangibles....the things even the most brilliant minds can't account for when planning? Well, "Doomsday" is all about that...the intangibles and the unexpected.
The acting in this one is top notch. And, for television it plays much more like a movie...a film noir one in many ways...especially in how it all ends. Well worth seeing...and ample evidence that Duryea was quite an actor...as was his second in command, the always menacing Robert Middleton.