"NO SIGN OF THE CROSS"
Places like this always remind me of 'The Untouchables'.
Yeah.... that was a good show.
Since the exploits of Eliot Ness versus the Chicago mob happened decades before, this quote from a 1970s TV show is a lot easier to splain away than when a current show drops a reference to another current show. (I can't think of any that are actually current, but off the top of my head there was a mention of 'Lost' as a TV show on an episode of 'Will & Grace' once.)
So 'The Untouchables' - even when it was produced back in the 1950s - was still an historical event. And so a TV show about it, especially since it was such a thrilling topic, made sense.
And how lucky were they to find an actor like Robert Stack who looked exactly like the televersion of Eliot Ness?