When Miss Charlotte Wilson asks God for a husband, she decides He must want her to pursue Mr. Hamilton Beckett, the catch of the season. The only problem? She's never actually met Hamilton. Fortunately, one of her oldest and dearest friends, Mr. Henry St. James - who has returned to New York after a two-year absence - does know Hamilton. Much to Henry's chagrin, Charlotte immediately ropes him into helping her meet Hamilton. However, none of her plans to catch Hamilton's eye go as she expected, and she is even more confused when her old feelings for Henry begin to resurrect themselves.

Miss Permilia Griswold may have been given the opportunity of a debut into New York high society, but no one warned her she wasn't guaranteed to "take". After spending the last six years banished to the wallflower section of the ballroom, she's finally putting her status on the fringes of society to good use by penning anonymous society gossip columns under the pseudonym "Miss Quill". When Permilia overhears a threat against the estimable Mr. Rutherford, she's determined to warn him.

Miss Isadora Delafield may be an heiress, but her life is far from carefree. When her mother begins pressuring her to marry an elderly and uncouth duke, she escapes from the high-society world she's always known and finds herself to be an unlikely candidate for a housekeeper position in rural Pennsylvania. Mr. Ian MacKenzie is known for his savvy business sense and has built his reputation and fortune completely on his own merits. But when his adopted parents are in need of a new housekeeper and Isadora is thrown into his path, he's unexpectedly charmed by her unconventional manner.

Three years into the Great War, England's greatest asset is their intelligence network - field agents risking their lives to gather information, and codebreakers able to crack every German telegram. Margot De Wilde thrives in the environment of the secretive Room 40, where she spends her days deciphering intercepted messages. But when her world is turned upside down by an unexpected loss, for the first time in her life numbers aren't enough.

Forced to run for her life, Kit FitzGilbert finds herself in the very place she swore never to return to - a London ballroom. There she encounters Graham, Lord Wharton, who believes Kit holds the key to a mystery he's trying to solve. As much as she wishes that she could tell him everything, she can't reveal the truth without endangering those she loves.