‘You say that there is only one way that Sir Richard could have been stabbed, Miss Marple,’ said the clergyman, looking at her curiously.

‘It is very sad and I don’t like to think of it. He was a right-handed man, was he not? I mean to stab himself in the left shoulder he must have been. I was always so sorry for poor Jack Baynes in the War. He shot himself in the foot, you remember, after very severe fighting at Arras. He told me about it when I went to see him in hospital, and very ashamed of it he was. I don’t expect this poor man, Elliot Haydon, profited much by his wicked crime.’

‘Elliot Haydon,’ cried Raymond. ‘You think he did it?’

‘I don’t see how anyone else could have done it,’ said Miss Marple, opening her eyes in gentle surprise. ‘I mean if, as Mr Petherick so wisely says, one looks at the facts and disregards all that atmosphere of heathen goddesses which I don’t think is very nice. He went up to him first and turned him over, and of course to do that he would have to have had his back to them all, and being dressed as a brigand chief he would be sure to have a weapon of some kind in his belt. I remember dancing with a man dressed as a brigand chief when I was a young girl. He had five kinds of knives and daggers, and I can’t tell you how awkward and uncomfortable it was for his partner.’

All eyes were turned towards Dr Pender.

‘I knew the truth,’ said he, ‘five years after that tragedy occurred. It came in the shape of a letter written to me by Elliot Haydon. He said in it that he fancied that I had always suspected him. He said it was a sudden temptation. He too loved Diana Ashley, but he was only a poor struggling barrister. With Richard out of the way and inheriting his title and estates, he saw a wonderful prospect opening up before him. The dagger had jerked out of his belt as he knelt down by his cousin, and almost before he had time to think he drove it in and returned it to his belt again. He stabbed himself later in order to divert suspicion. He wrote to me on the eve of starting on an expedition to the South Pole in case, as he said, he should never come back. I do not think that he meant to come back, and I know that, as Miss Marple has said, his crime profited him nothing. “For five years,” he wrote, “I have lived in Hell. I hope, at least, that I may expiate my crime by dying honourably.”’

There was a pause.

‘And he did die honourably,’ said Sir Henry. ‘You have changed the names in your story, Dr Pender, but I think I recognize the man you mean.’

‘As I said,’ went on the old clergyman, ‘I do not think that explanation quite covers the facts. I still think there was an evil influence in that grove, an influence that directed Elliot Haydon’s action. Even to this day I can never think without a shudder of The Idol House of Astarte.’