Walt: It's Walt. How are you feeling? Kind of under the weather, like you've got the flu? That would be the ricin I gave you. I slipped it into that Stevia crap that you're always putting in your tea.
Earlier in the episode when Walt interrupted a meeting between Lydia and Todd to talk some business, he also secretly poured ricin inside the Stevia bag that Lydia poured inside his chamomile tea. Brilliant way to kill her… in a TV show. In real life it would not work that way since ricin, being a protein, would denaturate at once if put in hot or boiling water.
The writers and I all subscribe to the dramatic philosophy of playwright Chekhov, who said that if you establish a gun in Act 1, you better have it get fired at somebody by Act 3. We knew that ricin was still out there and we knew it was hidden behind the wall outlet in the old White house bedroom. I guess we could have let it slide, but we thought to ourselves, ‘The audience has been real good to us, they’ve paid very close attention, we want to reward them by not leaving any loose ends here.’ And also, honestly, the actress who plays Lydia [Laura Fraser] is a wonderful, warm, sweet person but the chatacter of Lydia — we were all champing at the bit to see her get her just deserts much more than Todd even. Todd is so likable, you almost have these ambivalent feelings when he’s being choked to death. But Lydia? We were all of one mind when we were saying, ‘Oh man, she’s got to go.’ So we figured, ‘What’s the best way to do that?’ And we thought somehow she could be there when the M60 goes off, but then we thought, ‘She’d never be around for that kind of stuff.’ She’s just not that person. And then we thought, ‘Can we use the ricin?’ So we were very proud of ourselves when we figured out a way to hang it all together and have her get her just deserts as well. It was very hard-fought, trying to figure out how to plot all this stuff out so that everyone got theirs. Everyone had their final moment in the episode, and it caused a lot of headaches and a lot of stress trying to get all the stuff worked into the final hour of TV [laughs], but I feel real good about it that we did it.
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