Hartford Brothers Books in Order

At the heart of the Hartford Brothers series is a tight circle of New York old money and the people brave enough to fall in love with it. The Hartford men are polished, wealthy, and very used to getting their way, but JA Low puts them up against women who have long histories with the family and no interest in being a pretty ornament on someone's arm.

Every book focuses on a different brother, so you get a full romance each time as well as a running family soap opera in the background.

In Tempting the Billionaire, eldest brother Stirling faces the worst possible temptation, his best friend's little sister, Audrey, who has been half in love with him since her eighteenth birthday wish went sideways. Playing the Player follows Remington, the golden-boy polo star, and Nell, the girl who grew up on his family's farm and became his secret first love before a brutal betrayal sent them in opposite directions. Seducing the Doctor brings in Miles, the driven, slightly grumpy brother whose one anonymous night with a younger woman turns into a complicated second chance when an unexpected pregnancy drags both of them out of their carefully planned lives.

Settings swing between sleek Manhattan offices, glossy London hotels, and the Hartford family's horse property in the Hamptons, where summers are a blur of polo matches, parties, and long-simmering crushes. The tone is indulgent and angsty, full of forbidden touches in guest bedrooms, late-night phone calls across time zones, and the constant tug-of-war between duty to the family name and the pull of a relationship that actually feels like home. Expect frank heat on the page and a lot of emotional fallout when old secrets finally surface.

These stories also sit inside JA Low's wider universe, crossing over with characters from the Playboys of New York and Paradise Club books, so familiar faces pop up at weddings, boardrooms, and island getaways. You can read the Hartford Brothers as standalones, but in order they give you the slow unfolding of a complicated family, including overprotective siblings who have to watch each other break the very rules they laid down. If you like age gaps, brother's-best-friend tension, and heroines who refuse to stay on the sidelines of their own lives, this is the series to sink into.