I'm always amazed at how some of the themes currently at the height of interest were also touched upon by classic books. Case in question The Making of a Marchioness, by Frances Hodgson Burnett. Written in 1901, it talks of financial peril, marriage of convenience and death plots for inheritance purposes...
I came upon it having watched "The making of a Lady" (I assume because the title of Marchioness is not well-known), a slightly rom-com set in a Victorian context - easy for a gentle afternoon watching, while knitting / cross-stitching / petting your cat, or whatever Victorians would do in the afternoon...