Paige got scared. She tried to move her, but Nora fell against the railing, which is why the mark was there.
That’s why there was water on the floor, because Paige had spilled a glass when she came in and had walked to the balcony. That’s why the cigarette butt appeared behind the flowerpot, because Paige smoked while she decided whether to call emergency services or run away.
In the end, she fled. A neighbor who was out buying bread saw Nora downstairs and called an ambulance, and that call saved her life.
When Liam heard everything, he felt no relief. He felt ashamed.
Yes, Paige had poisoned Nora. Yes, Gwen had been an accomplice out of ignorance, out of pride, out of that cruel need to be right.
But he had closed the door. He had been the husband who preferred to suspect rather than ask.
The husband who let his sister humiliate his wife at their own dinner table. The husband who saw tears and mistook them for guilt.