Isobel Sedbusk: I always think of my murderers as my heroes.


--Auriol Lee (as Isobel Sedbusk) in Suspicion

Isobel Sedbusk: Imagine a substance in daily use everywhere. Anyone can lay his hands on it, and within a minute after taking, the victim's beautifully out of the way. Mind you, it's undetectable after death.
Lina McLaidlaw Aysgarth: Is whatever it is, painful?
Isobel Sedbusk: Oh, not in the least. In fact I should think it'd be a most pleasant death.


--Auriol Lee (as Isobel Sedbusk) in Suspicion

Isobel Sedbusk: You couldn't hurt a fly, Bertram, unless it was already dead.


--Auriol Lee (as Isobel Sedbusk) in Suspicion

Lina McLaidlaw Aysgarth: When he enticed his victim across the footbridge, knowing that the bridge has been sawn through...
Isobel Sedbusk: He also knew that his victim couldn't swim. Don't forget that.
Lina McLaidlaw Aysgarth: Well, what I want to know is this. Would you call that an actual murder?
Isobel Sedbusk: Well, from a moral standpoint there's no question at all. It is murder.


--Auriol Lee (as Isobel Sedbusk) in Suspicion