I recently received an email (Quilting Daily @Interweave) asking me this question in the re: line.
I actually found myself giving it some thought.
So I decided to do a little snooping around myself and my research "revealed" something interesting about Agatha Christie. The concensus is, that in five of her stories, Agatha purposely allows the killer character to escape justice by not being brought to justice in the legal sense but instead die, allowing for a more sympathetic outcome. 1
I can picture her sitting quietly in her corner, working on in secret. At the very end she reveals what's on her needles. What else but a pair of knitted handcuffs! I think she would have chosen to do them in very sturdy, very scratchy yarn. Just goes to show, every yarn has a purpose. chuckle, chuckle
And all the women who were wise of heart spun with their hands, and they kept bringing as yarn the blue thread and the wool dyed reddish purple, the coccus scarlet material and the fine linen. Ex. 35:25