"Because you were seriously alarmed for the future (потому что вы были сильно обеспокоены будущим). I do not know (я не знаю) whether you realize it, Mr. Clarke (осознаете ли вы это, мистер Кларк), but you played into my hands (но вы сыграли мне на руку) when you showed me a certain letter (когда показали мне определенное письмо) written to you by your brother (написанное вам вашим братом). In it he displayed very clearly his affection and absorption in Miss Thora Grey (в нем он очень отчетливо выражал свою привязанность и поглощенность мисс Торой Грей). His regard may have been a paternal one (его забота могла быть отцовской; regard — внимание; забота) — or he may have preferred to think it so (или он, возможно, предпочитал так думать).

alarm ['l:m], absorption [b's:pn], paternal [p't:nl]

"I think the idea first originated in your mind as the result of a chance encounter in a city coffee den with this odd personality with his bombastic Christian names. You were at that time turning over in your mind various plans for the murder of your brother."

"Really? And why?"

"Because you were seriously alarmed for the future. I do not know whether you realize it, Mr. Clarke, but you played into my hands when you showed me a certain letter written to you by your brother. In it he displayed very clearly his affection and absorption in Miss Thora Grey. His regard may have been a paternal one — or he may have preferred to think it so.

Nevertheless (тем не менее), there was a very real danger (была очень реальная опасность) that on the death of your sister-in-law (что после смерти вашей невестки) he might (он мог), in his loneliness (в своем одиночестве), turn to this beautiful girl for sympathy and comfort (обратиться к этой красивой девушке за сочувствием и успокоением) and it might end (и это могло закончиться) — as so often happens with elderly men (как так часто случается с пожилыми мужчинами) — in his marrying her (его женитьбой на ней). Your fear was increased by your knowledge of Miss Grey (ваш страх увеличился при вашем знакомстве с мисс Грей). You are (вы являетесь), I fancy (/как/ я представляю), an excellent (отличным), if somewhat cynical judge of character (хотя и несколько циничным знатоком характеров). You judged (вы вынесли суждение), whether correctly or not (правильно или нет), that Miss Grey was a type of young woman 'on the make' (что мисс Грей была типом молодой женщины, стремящейся к наживе; on the make — амер. стремящийся к наживе). You had no doubt (вы не имели сомнения) that she would jump at the chance of becoming Lady Clarke (что она ухватится за шанс стать леди Кларк; to jump — прыгать; захватывать)."

increase [n'kri:z], cynical ['snkl], jump [mp]

Nevertheless, there was a very real danger that on the death of your sister-in-law he might, in his loneliness, turn to this beautiful girl for sympathy and comfort and it might end — as so often happens with elderly men — in his marrying her. Your fear was increased by your knowledge of Miss Grey. You are, I fancy, an excellent, if somewhat cynical judge of character. You judged, whether correctly or not, that Miss Grey was a type of young woman 'on the make.' You had no doubt that she would jump at the chance of becoming Lady Clarke."

"Your brother was an extremely healthy and vigorous man (ваш брат был крайне здоровым и энергичным человеком). There might be children (могли бы быть дети) and your chance of inheriting your brother's wealth would vanish (и ваш шанс унаследовать богатство вашего брата испарился бы)."