Books like The Rake's Unconventional Mistress:
Juliet Landon
The Rake's Unconventional Mistress: is 282 pages, about 5 hours 10 minutes at 250 words a minute.
12 books to read next
How long each takes
The Luckiest Lady in London 6.6 h 
A Creed Country Christmas 4.7 h 
Villette, a Novel 9.9 h 
A Wanted Man 7.0 h 
Anna Karenina 14.1 h 
Rules of Civility 7.6 h 
A Rogue's Proposal 7.5 h 
Impetuous Innocent 6.3 h 
The Age of Innocence 6.4 h 
No Gentle Love 10.9 h 
The Edwardians 6.4 h 
Whitney, My Love 10.0 h Bar height shows length. Estimated at 250 words a minute.