In fact,' said Poirot, 'she stabbed him in the dark, not realising that he was dead already, but somehow deduced that he had a watch in his pyjama pocket, took it out, put back the hands blindly and gave it the requisite dent.
What you do not understand is that there are things that cannot be bought.
If it is necessary for a criminal to be a consummate actress, then by all means assume her to be one.
You've no idea of the agony of having your characters taken and made to say things that they never would have said, and do things that they never would have done. And if you protest, all they say is that it's ‘good theatre.
People should be interested in books, not their authors.
When I know what the murderer is like, I shall be able to find out who he is.