Vera Miles was still a very a beautiful woman at that point in time (she was still even daring enough to have a bikini scene in an episode of "Dan August" a couple years earlier) but that wig indeed was horrible. It took me years to realize that they were deliberately making her resemble Arlene Dahl who had given up acting to become a cosmetics executive during that period.

I guess I know the slightest bit about Arlene Dahl and cosmetics, but I never made the connection.

I always like Viveca's little "affectations" (though I don't mean that word in a bad way), like calling this and that man "Darling" and blowing those little kisses to the doorman.

Viveca really as promiscuous as she admitted? As she said something like " i like young men; lots of them". and then Columbo acted uncomfortable. or was she really telling Columbo that it was not that big of a deal or coincidence that she had dated Karl Lessing?

I don't know about the other things, but I think she wanted to rub in the fact that she saw a lot of men because he seemed uptight about it. Sort of like Cathy Goodland.
Which would make sense to me if Columbo ever actually SAID anything like that to Viveca or Cathy, but he didn't. People should wait till someone actually TALKS that way to get after them for it.

Id thought that peter cushing wouldve been lined up to be the vilian