I agree about Jennifer Welles, she is slimy.
The best victim was Frances Galesko-Antoinette
Bower played the part beautifully (most victims
in the series were basically ciphers, some never
even got to say a word-e.g. "Suitable for Framing").
Her best line is "what is this, Paul, some newly
found masculinity?" (after she was tied up!).
The most UNINTERESTING murderers were Viveca Scott
(Vera Miles in "Lovely but Lethal") and General
Hollister (Eddie Albert in "Dead Weight"). Both
were indifferent actors in uninteresting episodes.