The Diamond of the Ton Regency Mysteries Books in Order

The Diamond of the Ton Regency Mysteries pick up threads woven through The Crown Jewels Regency Mysteries and weave them into a more intimate, high‑stakes story focused on Charity Cresswell and Lord Peregrine Fitzroy. Set slightly later in the Regency period, these books live at the point where court intrigue and personal history collide.

In Brilliance and Betrayal, Peregrine returns to English society under the shadow of his mother's treason. Once a man who treated the ton like a chessboard, he now finds himself a pawn watched by everyone from gossips to ministers. When a foreign prince collapses at court, poisoned with henbane, suspicion falls squarely on him. Charity, once a kidnapping victim in an earlier conspiracy and now a widowed lady‑in‑waiting to the Queen, recognises the symptoms and realises old dangers have resurfaced.

Forced into an uneasy alliance, Peregrine and Charity have to unpick a plot that aims to derail a political marriage and destabilise alliances abroad. Their shared past makes trust difficult, but the further they dig, the clearer it becomes that the true enemy is willing to sacrifice anyone to succeed.

Shadows and Splendour finds them deeper in the web. Peregrine is pressed into service as a double agent, caught between the Crown and a secret society with its own agenda. Charity, having bargained with the Queen to save his life, discovers that her loyalty has a cost she did not fully understand. Together they navigate a court buzzing with rumours, a looming royal wedding, and a saboteur who always seems to be one step ahead.

In Radiance and Revenge, an old feud flares into something far more dangerous as an enemy who knows their histories intimately decides to strike where it will hurt most. The threats are both public and personal, forcing Charity and Peregrine to decide how much of themselves they are willing to risk for England, for each other, and for the chance at a life beyond surviving the next crisis.

The series blends the elegance of Regency settings with the tension of spy fiction and the slow burn of an enemies‑to‑lovers romance. Readers can expect richly drawn court scenes, coded messages traded under chandeliers, and a couple who are as sharp with each other as they are with their foes.

Taken together, these books offer a deeper dive into characters first glimpsed in the Crown Jewels stories, rewarding returning readers while remaining accessible to anyone who starts here.