Hyacinth may be the youngest Bridgerton sibling, but her book, "It's in His Kiss," actually comes before her older brother Gregory's. The baby of the Bridgerton bunch is all grown up and has become a popular, confident young woman. At one party, she crosses paths with Gareth St. Clair, a young man whose father has left him in a sticky situation. His sole clue to uncovering the truth about his family and his inheritance is an old diary — which happens to be written in Italian.
Hyacinth agrees to help Gareth translate the mysterious diary. The more time they spend together, however, the less they think about the mysteries of the past and the more they think about the prospects of the future.
