Dr. Mayfield is up near the top. Everybody did a great job in Stitch, but that laugh scene that got Columbo to slam his fist down in frustration was well done by all. Also, when he turns the tables on Sharon's accusations regarding the sutures, talk about ice cold arrogance, hehe:

"Sharon, I know you're not very fond of me, but I never realized you were so obsessive. If I were you, Id have that suture checked out. If you're so sure that I've done something that's going to make lovable old Hiedeman suddenly drop dead in a few days, I'm sure the police would love to know about it. I suggest you take your suspicions to them. But before you lose yourself in your hysteria, would you please mark and file these bottles and put them in the cooler tray?."