"She gave him the advertisement to insert, arranged for him to pay a visit to Little Paddocks to study the geography of the house, and showed him the spot where she would meet him and let him into the house on the night in question.
Dora Bunner, of course, knew nothing about all this.
"The day came -" He paused.
Miss Marple took up the tale in her gentle voice.
"She must have spent a very miserable day.
You see, it still wasn't too late to draw back... Dora Bunner told us that Letty was frightened that day and she must have been frightened.
Frightened of what she was going to do, frightened of the plan going wrong - but not frightened enough to draw back.
"It had been fun, perhaps, getting the revolver out of Colonel Easterbrook's collar drawer. Taking along eggs, or jam - slipping upstairs in the empty house.
It had been fun getting the second door in the drawing-room oiled, so that it would open and shut noiselessly.
Fun suggesting the moving of the table outside the door so that Phillipa's flower arrangements would show to better advantage.
It may have all seemed like a game. But what was going to happen next definitely wasn't a game any longer.
Oh, yes, she was frightened...
Dora Bunner was right about that."
"All the same, she went through with it," said Craddock.
"And it all went according to plan.
She went out just after six to 'shut up the ducks,' and she let Scherz in then and gave him the mask and cloak and gloves and the torch.
Then, at 6:30, when the clock begins to chime, she's ready by that table near the archway with her hand on the cigarette-box.
It's all so natural.
Patrick, acting as host, has gone for the drinks.
She, the hostess, is fetching the cigarettes.
She's judged, quite correctly, that when the clock begins to chime, everyone will look at the clock.
They did.
Only one person, the devoted Dora, kept her eyes fixed on her friend.
And she told us, in her very first statement, exactly what Miss Blacklog did. She said that Miss Blacklog had picked up the vase of violets.
"She'd previously frayed the cord of the lamp so that the wires were nearly bare.
The whole thing only took a second.
The cigarette-box, the vase and the little switch were all close together.
She picked up the violets, spilt the water on the frayed place, and switched on the lamp.
Water's a good conductor of electricity.
The wires fused."
"Just like the other afternoon at the Vicarage," said Bunch.
"That's what startled you so, wasn't it, Aunt Jane?"
"Yes, my dear.
I've been puzzling about those lights.
I'd realised that there were two lamps, a pair, and that one had been changed for the other - probably during the night."
"That's right," said Craddock.
"When Fletcher examined that lamp the next morning it was, like all the others, perfectly in order, no frayed flex or fused wires."
"I'd understood what Dora Bunner meant by saying it had been the shepherdess the night before," said Miss Marple, "but I fell into the error of thinking, as she thought, that Patrick had been responsible.
The interesting thing about Dora Bunner was that she was quite unreliable in repeating things she had heard - she always used her imagination to exaggerate or distort them, and was usually wrong in what she thought - but she was quite accurate about the things she saw.
She saw Letitia pick up the violets -"
"And she saw what she described as a flash and a crackle," put in Craddock.
"And of course, when dear Bunch spilt the water from the Christmas roses on to the lamp wire - I realised at once that only Miss Blacklog herself could have fused the lights because only she was near that table."
"I could kick myself," said Craddock.
"Dora Bunner even prattled about a burn on the table where someone had 'put their cigarette down' - but nobody had even lit a cigarette...
And the violets were dead because there was no water in the vase - a slip on Letitia's part - she ought to have filled it up again.
But I suppose she thought nobody would notice and as a matter of fact Miss Bunner was quite ready to believe that she herself had put no water in the vase to begin with." He went on: "She was highly suggestible, of course.
And Miss Blacklog took advantage of that more than once.
Bunny's suspicions of Patrick were I think, induced by her."
"Why pick on me?" demanded Patrick in an aggrieved tone.
"It was not, I think, a serious suggestion - but it would keep Bunny distracted from any suspicion that Miss Blacklog might be stage managering the business.