TAMSIN WRIGHT IS UNSTOPPABLE.

She must become the Glittering Court's diamond: the girl with the highest test scores, the most glamorous wardrobe, and the greatest opportunities to match with an elite suitor in the New World. Training alongside other girls in the Glittering Court, Tamsin immerses herself completely in lessons about etiquette, history, and music--everything a high-society wife would need to know. If she can marry well, she'll finally be able to support her struggling family, and to do that she'll have to be the best.

When her friendship with Mira and Adelaide, her roommates at the Glittering Court, threatens her status as the top-ranked prospect, she does the only thing she knows will keep her on track: she cuts them out of her life. But when her voyage across the sea goes off course, Tamsin must use her unrelenting grit and determination to survive the harsh winter far north of her intended destination in hopes of making it back to the Glittering Court in time to secure a proposal.

Experiencing new cultures and beliefs for the first time, Tamsin realizes that her careful studies haven't prepared her for everything, and with new alliances formed with roguish tradesman Jago Robinson and good-natured minister Gideon Stewart, Tamsin's heart begins to be pulled in different directions. But she can't let her brewing attraction get in the way of her ultimate goal: protecting the secret she holds closest to her heart, the one that would unravel everything she's worked for if it's uncovered.

This description comes from the publisher. The Emerald Sea is the third book in the Glittering Court series, the first of which is The Glittering Court.