A Boston Blue episode creates its first Blue Bloods plot hole over Reagan birth order

Jamie’s Visit Revives An Issue
Boston Blue has brought some Blue Bloods characters into its new setting while building a separate world around Danny Reagan’s life in Boston. Maria Baez is a recurring cast member, and detective Lena Silver helps anchor the series’ new characters.
Jamie Reagan’s appearance in season 2, episode 5, “Blood Diamonds,” brought the shows’ continuity into focus. In a tense moment, Danny says that he and Jamie lost their older brother, Joe.
The Family Order Changed
Blue Bloods initially established Danny as the oldest son, followed by Erin, Joe, and Jamie. Later, the series made Joe the eldest Reagan brother to support the introduction of his son, Joe Hill.
The Boston Blue exchange follows that later version, while many fans still regard Danny as the oldest. That leaves the franchise presenting competing accounts of the brothers’ birth order.
Fans Still Welcome The Reunions
The inconsistency may frustrate viewers, but the reunion between Danny and Jamie offered a reason to welcome more Reagan appearances in Boston. Jamie’s visit also showed how his life has changed since Blue Bloods ended.
Jamie is now a father to a son with Eddie. Will Estes has spoken about the difficulty of returning to the role, though his performance in Boston Blue made the character feel familiar.
Key points
- Jamie Reagan’s visit in “Blood Diamonds” brought the birth-order inconsistency back into view.
- Blue Bloods first made Danny the oldest son, then later shifted Joe to that position.
- Danny calls Joe his older brother, reflecting the later version of the family history.
- Jamie’s return renewed interest in seeing more Reagan family visits in Boston.

