It's in His Kiss

The seventh installment in the Bridgerton series follows Hyacinth Bridgerton, the youngest and most outspoken of the family, as she navigates the high society of Regency London. Her path crosses that of Gareth St. Clair, a man with a complicated past and a father who seeks to ruin his inheritance. Gareth possesses an old family diary written in Italian, a language he does not speak, which may hold the key to his future. Hyacinth, whose own Italian is imperfect, offers to translate the text, leading to a partnership that is as much about intellectual sparring as it is about romance. As they delve into the diary's mysteries, they discover that the answers they seek lie not in the text, but in their connection to one another.

Description adapted from Open Library ↗.