Prudence Cabot sailed to Europe to find a lover.

As an American widow flush with cash, she has hopes of finding the burning, passionate love she never experienced in her marriage. But instead, she found The Ladies Alpine Society, and is now pressed into planning a fundraising ball with the expedition’s accountant, Leo Moon. Prudence feels out of her depth, but glad to have a partner-in-crime to help her navigate British culture. But the taciturn Mr. Moon doesn’t like her—or does he like her too much?

One look and she saw right through him.

Leo Moon is not his real name. He has spent most of his life building his wealth, protecting his mother, hiding in plain sight. But in walks Prudence, and his secrets are laid bare. When he overhears her talking about wanting a lover, he offers his services. After all, they’ve been charged with planning a ridiculous party, so they have an excuse to call on one another. But as they keep their burning-hot secret, Leo’s past waltzes into London, and Leo is forced to choose.

When both are in need, who rescues who?

Eleanor Piper's best friend is a one-eyed former ship's captain who taught her every knot he ever knew. Now at a marriageable age, her parents want an aristocratic marriage for her, now that Piper Shipping Co. has been recognized as an economic power. As she escapes to the ladies lounge during her first ball, she encounters the beautiful and ambitious Miss Ophelia Bridewell with a fashion mishap that requires a decorative knot to fix. As soon as Eleanor helps, Ophelia sweeps Eleanor into the Ladies Alpine Society. Not knowing what the club is about, and having had no friends her own age, Eleanor is pleased and intimidated. And then she meets Ophelia's brother, the unspeakably handsome Tristan. Oh, did Ophelia mention that they were climbing the tallest mountain in the UK? The fog-riddled, treacherous Ben Nevis?

Tristan Bridewell is the spare, not the heir. The third child and the second son, he is free to do whatever he likes. If he could figure out what that was, all would be well. Blessed with good looks, an even temperament, and a robust constitution makes him happy to help his younger sister's singular focus on mountain climbing. Ever since the Matterhorn was summited the previous year, his sister Ophelia can think of nothing else. Will Tristan help her? Absolutely. Will he be a part of the Ladies Alpine Society?