'"Yes?"

'"Mrs Prichard says that something about Zarida was faintly familiar to her."

'"Well?"

'"Well, I don't like it, Mr Pritchard, that's all."

'"I didn't know you were so superstitious, nurse."

'"I'm not superstitious; but I know when a thing is fishy."

'It was about four days after this that the first incident happened. To explain it to you, I shall have to describe Mrs Pritchard's room -'

'You'd better let me do that,' interrupted Mrs Bantry. 'It was papered with one of those new wallpapers where you apply clumps of flowers to make a kind of herbaceous border. The effect is almost like being in a garden - though, of course, the flowers are all wrong. I mean they simply couldn't be in bloom all at the same time -'

'Don't let a passion for horticultural accuracy run away with you, Dolly,' said her husband. 'We all know you're an enthusiastic gardener.'

'Well, it is absurd,' protested Mrs Bantry. 'To have bluebells and daffodils and lupins and hollyhocks and Michaelmas daisies all grouped together.'

'Most unscientific,' said Sir Henry. 'But to proceed with the story.'

'Well, among these massed flowers were primroses, clumps of yellow and pink primroses and - oh go on, Arthur, this is your story -'

Colonel Bantry took up the tale.

'Mrs Pritchard rang her bell violently one morning. The household came running - thought she was in extremis, not at all. She was violently excited and pointing at the wallpaper; and there sure enough was one blue primrose in the midst of the others… '

'Oh!' said Miss Helier, 'how creepy!'

'The question was: Hadn't the blue primrose always been there? That was George's suggestion and the nurse's. But Mrs Pritchard wouldn't have it at any price. She had never noticed it till that very morning and the night before had been full moon. She was very upset about it.'

'I met George Pritchard that same day and he told me about it,' said Mrs Bantry. 'I went to see Mrs Pritchard and did my best to ridicule the whole thing; but without success. I came away really concerned, and I remember I met Jean Instow and told her about it. Jean is a queer girl. She said, "So she's really upset about it?" I told her that I thought the woman was perfectly capable of dying of fright - she was really abnormally superstitious.

'I remember Jean rather startled me with what she said next. She said, "Well, that might be all for the best, mightn't it?" And she said it so coolly, in so matter-of-fact a tone that I was really - well, shocked. Of course I know it's done nowadays - to be brutal and outspoken; but I never get used to it. Jean smiled at me rather oddly and said, "You don't like my saying that - but it's true. What use is Mrs Pritchard's life to her? None at all; and it's hell for George Pritchard. To have his wife frightened out of existence would be the best thing that could happen to him." I said, "George is most awfully good to her always." And she said, "Yes, he deserves a reward, poor dear. He's a very attractive person, George Pritchard. The last nurse thought so - the pretty one - what was her name? Carstairs. That was the cause of the row between her and Mrs P."

'Now I didn't like hearing Jean say that Of course one had wondered -'

Mrs Bantry paused significantly.

'Yes, dear,' said Miss Marple placidly. 'One always does. Is Miss Instow a pretty girl? I suppose she plays golf?'

'Yes. She's good at all games. And she's nice looking, attractive-looking, very fair with a healthy skin, and nice steady blue eyes. Of course we always have felt that she and George Pritchard - I mean if things had been different - they are so well suited to one another.'

'And they were friends?' asked Miss Marple.

'Oh yes. Great friends.'

'Do you think. Dolly,' said Colonel Bantry plaintively, 'that I might be allowed to go on with my story?'

'Arthur,' said Mrs Bantry resignedly, 'wants to get back to his ghosts.'

'I had the rest of the story from George himself,' went on the colonel. 'There's no doubt that Mrs Pritchard got the wind up badly towards the end of the next month. She marked off on a calendar the day when the moon would be full, and on that night she had both the nurse and then George into her room and made them study the wallpaper carefully. There were pink hollyhocks and red ones, but there were no blue amongst them. Then when George left the room she locked the door -'

'And in the morning there was a large blue hollyhock,' said Miss Helier joyfully.

'Quite right,' said Colonel Bantry. 'Or at any rate, nearly right. One flower of a hollyhock just above her head had turned blue. It staggered George; and of course the more it staggered him the more he refused to take the thing seriously. He insisted that the whole thing was some kind of practical joke. He ignored the evidence of the locked door and the fact that Mrs Pritchard discovered the change before anyone - even Nurse Copling - was admitted.

'It staggered George; and it made him unreasonable. His wife wanted to leave the house, and he wouldn't let her. He was inclined to believe in the supernatural for the first time, but he wasn't going to admit it. He usually gave in to his wife, but this time he wouldn't. Mary was not to make a fool of herself, he said. The whole thing was the most infernal nonsense.

'And so the next month sped away. Mrs Pritchard made less protest than one would have imagined. I think she was superstitious enough to believe that she couldn't escape her fate. She repeated again and again: "The blue primrose - warning. The blue hollyhock - danger. The blue geranium - death." And she would lie looking at the clump of pinky-red geraniums nearest her bed.

'The whole business was pretty nervy. Even the nurse caught the infection. She came to George two days before full moon and begged him to take Mrs Pritchard away. George was angry.

'"If all the flowers on that damned wall turned into blue devils it couldn't kill anyone!" he shouted.

'"It might. Shock has killed people before now."

'"Nonsense," said George.

George has always been a shade pig-headed. You can't drive him. I believe he had a secret idea that his wife worked the changes herself and that it was all some morbid hysterical plan of hers.

'Well, the fatal night came. Mrs Pritchard locked the door as usual. She was very calm - in almost an exalted state of mind. The nurse was worried by her state - wanted to give her a stimulant, an injection of strychnine, but Mrs Pritchard refused. In a way, I believe, she was enjoying herself. George said she was.'

'I think that's quite possible,' said Mrs Bantry. 'There must have been a strange sort of glamour about the whole thing.'

'There was no violent ringing of a bell the next morning. Mrs Pritchard usually woke about eight When, at eight-thirty, there was no sign from her, nurse rapped loudly on the door. Getting no reply, she fetched George, and insisted on the door being broken open. They did so with the help of a chisel.

'One look at the still figure on the bed was enough for Nurse Copling. She sent George to telephone for the doctor, but it was too late. Mrs Pritchard, he said, must have been dead at least eight hours. Her smelling salts lay by her hand on the bed, and on the wall beside her one of the pinky-red geraniums was a bright deep blue.'

'Horrible,' said Miss Helier with a shiver.

Sir Henry was frowning.

'No additional details?'

Colonel Bantry shook his head, but Mrs Bantry spoke quickly.

'The gas.'

'What about the gas?' asked Sir Henry.

'When the doctor arrived there was a slight smell of gas, and sure enough he found the gas ring in the

fireplace very slightly turned on; but so little it couldn't have mattered.'

'Did Mr Pritchard and the nurse not notice it when they first went in?'