1I was to wonder afterwards that I could have been so blind. The truth had stuck out so clearly all along. Josephine and only Josephine fitted in with all the necessary qualifications. Her vanity, her persistent self-importance, her delight in talking, her reiteration on how clever she was, and how stupid the police were.

2I had never considered her because she was a child. But children have committed murders, and this particular murder had been well within a child's compass. Her grandfather himself had indicated the precise method - he had practically handed her a blue print. All she had to do was to avoid leaving fingerprints and the slightest knowledge of detective fiction would teach her that. And everything else had been a mere hotch potch, culled at random from stock mystery stories. The notebook - the sleuthing - her pretended suspicions, her insistence that she was not going to tell till she was sure...

3And finally the attack on herself. An almost incredible performance considering that she might easily have killed herself.

4But then, childlike, she never considered such a possibility. She was the heroine. The heroine isn't killed. Yet there had been a clue there - the traces of earth on the seat of the old chair in the wash house. Josephine was the only person who would have had to climb up on a chair to balance the block of marble on the top of the door. Obviously it had missed her more than once, (the dints in the floor) and patiently she had climbed up again and replaced it, handling it with her scarf to avoid fingerprints. And then it had fallen - and she had had a near escape from death.

5It had been the perfect set up - the impression she was aiming for! She was in danger, she "knew something," she had been attacked!

6I saw how that had deliberately drawn my attention to her presence in the cylinder room. And she had completed the artistic disorder of her room before going out to the wash house.

7But when she had returned from hospital, when she had found Brenda and Laurence arrested, she must have become dissatisfied.

8The case was over - and she - Josephine, was out of the lime light.

9So she stole the digitalin from Edith's room and put it in her own cup of cocoa and left the cup untouched on the hall table.

10Did she know that Nannie would drink it? Possibly. From her words that morning, she had resented Nannie's criticisms of her.

11Did Nannie, perhaps, wise from a lifetime of experience with children, suspect? I think that Nannie knew, had always known, that Josephine was not normal. With her precocious mental development had gone a retarded moral sense. Perhaps, too, the various factors of heredity - what Sophia had called the "ruthlessness" of the family had met together.

12She had had an authoritarian ruthlessness of her grandmother's family, and the ruthless egoism of Magda, seeing only her own point of view. She had also presumably suffered, sensitive like Philip, from the stigma of being the unattractive - the changeling child - of the family. Finally, in her very marrow, had run the essential crooked strain of old Leonides. She had been Leonides's grandchild, she had resembled him in brain and in cunning - but his love had gone outwards to family and friends, hers had turned to herself.

13I thought that old Leonides had realised what none of the rest of the family had realised, that Josephine might be a source of danger to others and to herself. He had kept her from school life because he was afraid of what she might do. He had shielded her, and guarded her in the home, and I understood now his urgency to Sophia to look after Josephine.

14Magda's sudden decision to send Josephine abroad had that, too, been due to a fear for the child? Not, perhaps, a conscious fear, but some vague maternal instinct. And Edith de Haviland? Had she first suspected, then feared - and finally known?

15I looked down at the letter in my hand.

16Dear Charles. This is in confidence for you - and for Sophia if you so decide. It is imperative that someone should know the truth. I found the enclosed in the disused dog kennel outside the back door. She kept it there. It confirms what I already suspected. The action I am about to take may be right or wrong - I do not know. But my life, in any case, is close to its end, and I do not want the child to suffer as I believe she would suffer if called to earthly account for what she has done.

17There is often one of the litter who is "not quite right".

18If I do wrong. God forgive me - but I do it out of love. God bless you both.

19Edith de Haviland

20I hesitated for only a moment, then I handed the letter to Sophia. Together we again opened Josephine's little black book.

21Today I killed grandfather.

22We turned the pages. It was an amazing production. Interesting, I should imagine, to a psychologist. It set out, with such terrible clarity, the fury of thwarted egoism.

23The motive for the crime was set down, pitifully childish and inadequate.

24Grandfather wouldn't let me do bally dancing so I made up my mind I would kill him. Then we would go to London and live and mother wouldn't mind me doing bally.

25I give only a few entries. They are all significant.

26I don't want to go to Switzerland - I won't go. If mother makes me I will kill her too - only I can't get any poison. Perhaps I could make it with youberries. They are poisonous, the book says so. Eustace has made me very cross to day. He says I am only a girl and no use and that its silly my detecting. He wouldn't think me silly if he knew it was me did the murder.

27I like Charles - but he is rather stupid. I have not decided yet who I shall make have done the crime. Perhaps Brenda and Laurence - Brenda is nasty to me - she says I am not all there but I like Laurence - he told me about Chariot Korday - she killed someone in his bath. She was not very clever about it.

28The last entry was revealing.

29I hate Nannie... I hate her... I hate her... She says I am only a little girl. She says I show off. She's making mother send me abroad... I'm going to kill her too - I think Aunt Edith's medicine would do it. If there is another murder, then the police will come back and it will all be exciting again.

30Nannie's dead. I am glad. I haven't decided yet where I'll hide the bottle with the little pill things. Perhaps in Aunt Clemency's room - or else Eustace.

31When I am dead as an old woman I shall leave this behind me addressed to the Chief of the Police and they will see what a really great criminal I was.

32I closed the book. Sophia's tears were flowing fast.

33"Oh Charles - oh Charles - it's so dreadful. She's such a little monster - and yet - and yet it's so terribly pathetic."

34I had felt the same.

35I had liked Josephine... I still felt a fondness for her... You do not like anyone less because they have tuberculosis or some other fatal disease. Josephine was, as Sophia had said, a little monster, but she was a pathetic little monster. She had been born with a kink - the crooked child of the little crooked house.

36Sophia asked:

37"If - she had lived - what would have happened?"

38"I suppose she would have been sent to a reformatory or a special school. Later she would have been released - or possibly certified, I don't know."

39Sophia shuddered.

40"It's better the way it is. But Aunt Edith - I don't like to think of her taking the blame."

41"She chose to do so. I don't suppose it will be made public. I imagine that when Brenda and Laurence come to trial, no case will be brought against them and they will be discharged.

42"And you, Sophia," I said, this time on a different note and taking both her hands in mine, "will marry me. I've just heard I'm appointed to Persia. We will go out there together, and you will forget the little Crooked House. Your mother can put on plays and your father can buy more books and Eustace will soon go to a university. Don't worry about them any more. Think of me."

43Sophia looked at me straight in the eyes.

44"Aren't you afraid, Charles, to marry me?"

45"Why should I be? In poor little Josephine all the worst of the family came together. In you, Sophia, I fully believe that all that is bravest and best in the Leonides family has been handed down to you. Your grandfather thought highly of you and he seems to have been a man who was usually right. Hold up your head, my darling. The future is ours."

46"I will, Charles. I love you and I'll marry you and make you happy." She looked down at the notebook. "Poor Josephine."

47"Poor Josephine," I said.

48"What's the truth of it, Charles?" said my father.

49I never lie to the Old Man.

50"It wasn't Edith de Haviland, sir," I said. "It was Josephine."

51My father nodded his head gently.

52"Yes," he said. "I've thought so for some time. Poor child..."