The guest cast in this one is outstanding - Vera Miles ("Psycho"), genre legend Vincent Price and future "West Wing" president Martin Sheen as the victim. Falk is his usual self, with befuddlement at the fashion industry and his ingratiating questions that waste no time in getting under Miles' skin. We also have a killer like Jack Cassidy in "Murder by the Book" and Hector Elizondo in "A Matter of Immunity" who winds up committing a second crime to cover the first. In this case, Viveca Scott kills her conniving mole in her rival's company.
The one thing I really love about this episode is that Vera Miles and Columbo really have an adversarial relationship. By the end, she's practically biting at him, and he gives it back to her. When he's describing the poison ivy that has been plaguing him (and gives him the key to the mystery)
Viveca: Oh, poor man. Still worried about your little itch.
Columbo: Aren't you worried about yours?
All in all, a strong start to a very strong season. In my opinion, there's not a weak episode in the bunch of Season 3.