Tác giả/tác phẩm ảnh hưởng nặng nề lên Pat [Patricia Highsmith] là Dos/Tội ác và Hình Phạt. Như… Sến, em gặp ông già rậm râu là mê liền, năm em 13 tuổi!
Trong nhật ký, em coi Dos, là "Thầy", và coi Tội Ác là 1 cuốn tiểu thuyết suspense, trinh thám nghẹt thở.
Thomas Mann phán, Tội Ác là một trong những cuốn tiểu thuyết trinh thám lớn lao nhất của mọi thời.
Cuốn trứ danh của Pat, Những kẻ lạ trên tàu, Strangers on a Train, là từ Tội Ác mà ra. Em phán: "Tôi có ý nghĩ của riêng tôi về nghệ thuật, và nó như vầy: điều mà hầu hết mọi người coi là kỳ quặc, thiếu tính phổ cập, fantastic, lacking in universality, thì tôi coi là cực yếu tính, the utmost essence, của sự thực."
Tzvetan Todorov, khi viết về sự quái dị trong văn chương, đã cho thấy, bằng cách nào tiểu thuyết trinh thám hiện đại đã thay thế truyện ma quỉ của quá khứ, và những nhận định của ông áp dụng rất OK với tiểu thuyết của Pat: “căn cước gẫy vụn, bể nát, những biên giới giữa cá nhân và môi trường chung quanh bị phá vỡ, sự mù mờ, lấp lửng giữa thực tại bên ngoài và ý thức bên trong”, đó là những yếu tố thiết yếu làm nền cho những đề tài quái dị.

GCC biết đến Patricia Highsmith qua phim Plein Soleil, Alain Delon đóng vai Mr. Ripley. Thời còn Sài Gòn. Còn đi học, hoặc mới đi làm.
Sau đó, mò coi truyện.
Mua Eleven, do đọc bài giới thiệu của Grahm Greene.

Truyện trinh thám của PH, theo GCC "khủng" hơn hết, so với các tác giả khác, đúng như Greene viết, bà tạo ra 1 thế giới của riêng bà, mỗi lần chúng ta mò vô, là một lần thấy ơn ớn.
Trong cuốn tiểu sử của bà, Cái bóng xinh đẹp, Beautiful shadow, người viết trích dẫn 1 câu trong nhật ký của bà, và là 1 câu trích dẫn Kierkegaard:
Mỗi cá nhân con người thì có nhiều cái bóng tạo thành những nếp gấp, tất cả những cái bóng đó thì giống người đó, và thi thoảng, có 1 cái bèn chiếm luôn chỗ của người đó.
Nguyên văn câu tiếng Anh, khác 1 tí, so với câu của GCC:
"The individual has manifold shadows, all of which resemble him, and from time to time have equal claim to be the man himself."
Kierkegaard, quoted in Highsmith’s 1949 journal

Miss Highsmith is a crime novelist whose books one can reread many times. There are very few of whom one can say that. She is a writer who has created a world of her own - a world claustrophobic and irrational which we enter each time with a sense of personal danger, with the head half turned over the shoulder, even with a certain reluctance, for these are cruel pleasures we are going to experience, until somewhere about the third chapter the frontier is closed behind us, we cannot retreat, we are doomed to live till the story's end with another of her long series of wanted men.
GG

Miss Highsmith is a crime novelist whose books one can reread many times. There are very few of whom one can say that. She is a writer who has created a world of her own - a world claustrophobic and irrational which we enter each time with a sense of personal danger, with the head half turned over the shoulder, even with a certain reluctance, for these are cruel pleasures we are going to experience, until somewhere about the third chapter the frontier is closed behind us, we cannot retreat, we are doomed to live till the story's end with another of her long series of wanted men.
It makes the tension worse that we are never sure whether even the worst of them, like the talented Mr Ripley, won't get away with it or that the relatively innocent won't suffer like the blunderer Walter on the relatively guilty escape altogether like Sydney Bartleby in A. Suspension of Mercy. This is a world without moral endings. It has nothing in common with the heroic world of her peers, Hammett and Chandler, and her detectives (sometimes monsters of cruelty like the American Lieutenant Corby of The Blunderer or dull sympathetic rational characters like the British Inspector Brockway) have nothing in common with the romantic and disillusioned private eyes who will always, we know, triumph finally over evil and see that justice is done, even though they may have to send a mistress to the chair.
Nothing is certain when we have crossed this frontier. It is not the world as we once believed we knew it, but it is frighteningly more real to us than the house next door. Actions arc sudden and impromptu and the motives sometimes so inexplicable that we simply have to accept them on trust. I believe because it is impossible. Her characters are irrational, and they leap to life in their very lack of reason; suddenly we realize how unbelievably rational most fictional characters are as they lead their lives from A to Z, like commuters always taking the same train. The motives of these characters are never inexplicable because they are so drearily obvious. The characters are as Hat as a mathematical symbol. We accepted them as real once, but when we look back at them from Miss Highsmith's side of the frontier, we realize that our world was not really as rational as all that. Suddenly with a sense of fear we think, 'Perhaps I really belong here,' and going out into the familiar street we pass with a shiver of apprehension the offices of the American Express, the centre, for so many of Miss Highsmith's dubious men, of their rootless European experience, where letters are to be picked up (though the name on the envelope is probably false) and travellers' cheques are to be cashed (with a forged signature) .
Miss Highsmith's short stories do not let us down, though we may be able sometimes to brush them off more easily because of their brevity. We haven't lived with them long enough to be totally absorbed. Miss Highsmith is the poet of apprehension rather than fear. Fear after a time, as we all learned in the blitz, is narcotic, it can lull one by fatigue into sleep, but apprehension nags at the nerves gently and inescapably. We have to learn to live with it. Miss Highsmith's finest novel to my mind is The Tremor of Forgery, and if I were to be asked what it is about I would reply, 'Apprehension'.
In her short stories Miss Highsmith has naturally to adopt a different method. She is after the quick kill rather than the slow encirclement of the reader, and how admirably and with what field-craft she hunts us down. Some of these stories were written twenty years ago, before her first novel, Strangers on a Train, but we have no sense that she is learning her craft by false starts, by trial and error. 'The Heroine', published nearly a quarter of a century ago, is as much a study of apprehension as her last novel. We can feel how dangerous (and irrational) the young nurse is from her first interview. We want to cry to the parents, 'Get rid of her before it's too late'.
My own favourite in this collection is the story 'When the Fleet Was In at Mobile' with the moving horror of its close here is Miss Highsmith at her claustrophobic best. 'The Terrapin', a late Highsmith, is a cruel story of childhood which can bear comparison with Saki's masterpiece, 'Sredni Vashtar', and for pure physical horror, which is an emotion rarely evoked by Miss Highsmith, 'The Snail-Watcher' would be hard to beat.
Mr Knoppert has the same attitude to his snails as Miss Highsmith to human beings. He watches them with the same emotionless curiosity as Miss Highsmith watches the talented Mr Ripley:

Mr Knoppert had wandered into the kitchen one evening for a bite of something before dinner, and had happened to notice that a couple of snails in the china bowl on the draining board were behaving very oddly. Standing more or less on their tails, they were weaving before each other for all the world like a pair of snakes hypnotized by a flute player. A moment later, their faces came together in a kiss of voluptuous intensity. Mr Knoppert bent closer and studied them from all angles. Something else was happening: a protuberance like an ear was appearing on the right side of the head of both snails. His instinct told him that he was watching a sexual activity of some sort.

Graham Greene