'Like Johnnie Backhouse,' thought Miss Marple, who always had a good storehouse of parallels to draw upon selected from inhabitants of St Mary Mead.

'I seen you last night,' had been Johnnie Backhouse's unpleasant taunt to all he thought it might affect.

It had been a surprisingly successful remark. So many people, Miss Marple reflected, have been in places where they are anxious not to be seen!

She dismissed Johnnie from her mind and concentrated on a vague something which Alex's account of Inspector Curry's remarks had stirred to life. Those remarks had given Alex an idea. She was not sure that they had not given her an idea, too. The same idea? Or a different one?

She stood where Alex Restarick had stood. She thought to herself, 'This is not a real Hall. This is only cardboard and canvas and wood. This is a stage scene…' Scrappy phrases flashed across her mind. 'Illusion -' 'In the eyes of the audience.' 'They do it with mirrors…' Bowls of goldfish… yards of coloured ribbon. vanishing ladies… all the panoply and misdirection of the conjurer's art.

Something stirred in her consciousness - a picture something that Alex had said… something that he had described to her… Constable Dodgett puffing and panting… Panting… Something shifted in her mind came into sudden focus.

'Why of course!' said Miss Marple. 'That must be it…'

'Oh, Wally, how you startled me!' Gina, emerging from the shadows by the theatre, jumped back a little, as the figure of Wally Hudd materialized out of the gloom. It was not yet quite dark, but had that eerie half light when objects lose their reality and take on the fantastic shapes of nightmare.

'What are you doing down here? You never come near the theatre as a rule.' 'Maybe I was looking for you, Gina. It's usually the best place to find you, isn't it?' Wally's soft, faintly drawling voice held no special insinuation, and yet Gina flinched a little.

'It's a job and I'm keen on it. I like the atmosphere of paint and canvas, and back stage generally.' 'Yes. It means a lot to you. I've seen that. Tell me, Gina, how long do you think it will be before this business is all cleared up?' 'The inquest's tomorrow. It will just be adjourned for a fortnight or something like that. At least, that's what Inspector Curry gave us to understand.' 'A fortnight,' said Wally thoughtfully. 'I see. Say three weeks, perhaps. And after that - we're free. I'm going back to the States then.' 'Oh! but I can't rush off like that,' cried Gina. 'I couldn't leave Grandam. And we've got these two new productions we're working on ' 'I didn't say "we." I said I was going.'

Gina stopped and looked up at her husband. Some-thing in the effect of the shadows made him seem very big. A big, quiet figure - and in some way, or so it seemed to her, faintly menacing… Standing over her. Threaten-ing - what?

'Do you mean' - she hesitated - 'you don't want me to come?'

'Why, no - I didn't say that.'

'You don't care if I come or not? Is that it?'

She was suddenly angry.

'See here, Gina. This is where we've got to have a showdown. We didn't know much about each other when we got married - not much about each other's backgrounds, not much about the other one's folks. We thought it didn't matter. We thought nothing mattered except having a swell time together. Well, stage one is over. Your folks didn't - and don't - think much of me.

Maybe they're right. I'm not their kind. But if you think I'm staying on here, kicking my heels, and doing odd jobs in what I consider is just a crazy set-up - well, think again! I want to live in my own country, doing the kind of job I want to do, and can do. My idea of a wife is the kind of wife who used to go along with the old pioneers, ready for anything, hardship, unfamiliar country, danger, strange surroundings… Perhaps that's too much to ask of you, but it's that or nothing! Maybe I hustled you into marriage. If so, you'd better get free of me and start again.

It's up to you. If you prefer one of these arty boys - it's your life and you've got to choose. But I'm going home.'

'I think you're an absolute pig,' said Gina. 'I'm enjoying myself here.'

'Is that so? Well, I'm not. You even enjoy murder, I suppose?'

Gina drew in her breath sharply.

'That's a cruel wicked thing to say. I was very fond of Uncle Christian. And don't you realize that someone has been quietly poisoning Grandam for months? It's horrible?

'I told you I didn't like it here. I don't like the kind of things that go on. I'm quitting.' 'If you're allowed to! Don't you realize you'll probably be arrested for Uncle Christian's murder? I hate the way Inspector Curry looks at you. He's just like a cat watching a mouse with a nasty sharp-clawed paw all ready to pounce. Just because you were out of the Hall fixing those lights, and because you're not English, I'm sure they'll go fastening it on you.' 'They'll need some evidence first.' Gina wailed: 'I'm frightened for you, Wally. I've been frightened all along.' 'No good being scared. I tell you they've got nothing on me!' They walked in silence towards the house.

Gina said: 'I don't believe you really want me to come back to America with you…' Walter Hudd did not answer.

Gina Hudd turned on him and stamped her foot.

'I hate you. I hate you. You are horrible - a beast - a cruel unfeeling beast. After all I've tried to do for you!

You want to be rid of me. You don't care if you never see me again. Well, I don't care if/never seeyou again! I was a stupid little fool ever to marry you, and I shall get a divorce as soon as possible, and I shall marry Stephen or Alexis and be much happier than I ever could be with you. And I hope you go back to the States and marry some horrible girl who makes you really miserable?

'Fine!' said Wally. 'Now we know where we are?

II Miss Marple saw Gina and Wally go into the house together.

She was standing at the spot where Inspector Curry had made his experiment with Constable Dodgett earlier in the afternoon.

Miss Believer's voice behind her made her jump.

'You'll get a chill, Miss Marple, standing about like that after the sun's gone down.'

Miss Marple fell meekly into step with her and they walked briskly through the house.

'I was thinking about conjuring tricks,' said Miss Marple. 'So difficult when you're watching them to see how they're done, and yet, once they are explained, so absurdly simple. (Although, even now, I can't imagine how conjurers produce bowls of goldfish!) Did you ever see the Lady who is Sawn in Half- such a thrilling trick.

It fascinated me when I was eleven years old, I remember. And I never could think how it was done. But the other day there was an article in some paper giving the whole thing away. I don't think a newspaper should do that, do you? It seems it's not one girl - but two. The head of one and the feet of the other. You think it's one girl and it's really two - and the other way round would work equally well, wouldn't it?'

Miss Believer looked at her with faint surprise.

Miss Marple was not often so fluffy and incoherent as this. 'It's all been too much for the old lady,' she thought.

'When you only look at one side of a thing, you only see one side,' continued Miss Marple. 'But everything fits in perfectly well if you can only make up your mind what is reality and what is illusion.' She added abruptly, 'Is Carrie Louise - all right?' 'Yes,' said Miss Believer. 'She's all right, but it must have been a shock, you know - finding out that someone wanted to kill her. I mean particularly a shock to her, because she doesn't understand violence.' 'Carrie Louise understands some things that we don't,' said Miss Marple thoughtfully. 'She always has.' 'I know what you mean - but she doesn't live in the real world.' 'Doesn't she?' Miss Believer looked at her in surprise.