A GENTLEMAN OF LEISURE 1910
Jimmy Pitt, rich, generous, popular American bachelor, has fallen in love with an unknown girl on a transatlantic liner. He bets a friend at the Strollers Club in New York that he can break into a house like any Raffles. He does so and it happens to be the apartment of a crooked New York policeman (English originally, sacked from Eton, and has now changed his name: a bad hat), John McEachern, whose daughter is/was the girl on the boat. The scene changes to Dreever Castle in Shropshire, where 'Spennie', Earl of Dreever, is bossed around by his self-made millionaire uncle, Sir Thomas Blunt, MP. Lady Julia Blunt has a £20,000 'diamond' necklace (it proves to be valueless white jargoon). Spennie is being sharked at billiards, poker and picquet by one of the house party. Among the guests are John McEachern, who has made his pile by New York graft and spends it bringing his beloved daughter into good English society. He now hopes to marry her to the 12th Earl of Dreever. Spennie's uncle and aunt also hope this will be a match because they think Moily McEachern is an heiress. Jimmy Pitt is of the house party too. He wins the love and hand of Molly.
Dreever Castle, a massive grey pile in Shropshire, built against raiders looming over the Welsh border, is a forerunner of Blandings, and perhaps Lady Julia and her 'diamonds' are forerunners of Lady Constanee and her diamonds in Leave it to Psmith.
In the two stage versions of this novel Douglas Fairbanks Sr. and John Barrymore, neither well known at the time, played the Jimmy Pitt part.

Джимми Пит - богатый и известный американский адвокат (или холостяк?) влюбляется в девушку на трансатлантическом лайнере.
Он держит пари в нью-йоркском  Strollers Club что сможет проникнуть в чужой дом точно Рафлз.
Случайно он выбирает дом продажного (?) полицейского, Джона Макичерна, в дочь которого он и влюбился на пароходе.......

я вот думаю, если писать содеражание до конца, то это как сейчас вроде бы принято говорить, спойлер получается.
Сюжет как мне кажется, освещается слабо, зато рассказывается что "убийца - дворецкий".

И все же, (не знаю как кому), лично мне хочется иметь энциклопедию, с героями и содержанием, чтобы можно было ориентироваться.