A scene from “Unfinished Business”

Joellen Waller: [after Jessica exposes her as the murderer] In Mat's class, Stewart Murphy gave me his story to read. He could really write. I photocopied it and stuck it in a drawer. And after endless rejection slips on my stuff, I got desperate. On an impulse, I changed the title and signed my name to it and sent it off to Hartley Publishing.

Lt. Harry Fogel: And bingo, you had a hit on your hands.

Joellen Waller: Arnold told me he was contacting me on Stewart's behalf. I agreed to buy Stewart's original manuscript for $30,000 and met him at Telesales, but he showed up without it. He said he needed it for insurance. Well, that's when I decided he had to die. I remembered his allergy to quinine. Back in Buffalo, Arnold had told me the lethal effect even simple tonic water could have on him. So, I suggested a drink to seal our partnership. He wanted whiskey and ginger ale, and I slipped in quinine water. I wiped my fingerprints off the bottle of quinine water and off my glass and followed him out. I knew it was only a matter of time until the quinine took effect. I took back my money from the little slime, but I still had to find the manuscript. I found the $200 from Wade and the locker key and figured he had hidden the original of Stewart Murphy's book. I wanted to take the Medic Alert bracelet so no one would know how he died, and then I heard the guard coming down the hall. I had to get away.

Jessica Fletcher: And the glass Arnold drank out of happened to have Mat's fingerprints on it.

Joellen Waller: When I heard about that, I talked Mat's super into letting me into his apartment, and I planted the $100 bills. I tried that damn key in every airline, railroad and bus terminal in town!

Jessica Fletcher: If you'd known he'd gotten off the bus in Yonkers, you might have gotten away with it.