If the intricate sleuthing grabbed you—the way Lord Wrexford parses alchemical symbols while Charlotte Sloane leverages her A.J. Quill printshop network and coffeehouse gossips to break open a conspiracy—then you’ll love following Sebastian St. Cyr as he unravels a brutal church murder amid Covent Garden, St. James’s, and government corridors. Like Wrexford and Charlotte outmaneuvering Bow Street and scientific societies, Devlin’s investigation tangles with surgeons, actors, and power brokers, delivering that same clever, clue-driven chase through Regency London’s glitter and grime.

If Charlotte’s razor-keen wit as A.J. Quill—and her barbed, laugh-out-loud back-and-forth with the acerbic Wrexford—was a highlight for you, this will hit the same sweet spot. Veronica Speedwell’s irreverent quips and combustible chemistry with Stoker echo the sparkling exchanges you enjoyed, while the pair dash through kidnappings and royal scandal with the same buoyant, cheeky energy that punctuates Raven and Hawk’s comic interludes in Murder on Black Swan Lane.

If the immersive texture of Regency London drew you in—the Royal Institution lectures, chemical experiments, engravers’ shops tied to A.J. Quill’s satirical prints, and coffeehouse intelligence—you’ll relish Lady Darby’s world. Set amid 1830s Scotland’s salons and shadowy corridors, it delves into anatomy, art, and period medical debates with the same meticulous detail that made Wrexford’s laboratory work and Charlotte’s print-world connections feel so convincing.

If you were struck by the social divides—Wrexford’s title set against Charlotte’s precarious existence as a widowed satirist, and the resourceful street urchins Raven and Hawk navigating dangers the nobility barely see—this plunges even deeper. Hodgson’s debtor’s prison is a terrifying maze of bribery, disease, and desperation that mirrors the perilous underbelly Charlotte leverages for information, laying bare the costs of class in a way that amplifies the tensions you felt in Murder on Black Swan Lane.

If watching Wrexford and Charlotte’s guarded alliance evolve—protecting Raven and Hawk while learning to trust each other’s strengths—kept you turning pages, you’ll adore Charlotte Holmes’s growing bond with Mrs. Watson and the complicated, simmering connection with Lord Ingram. Like Penrose’s duo shifting from wary collaborators to true partners, this story charts an intelligent, emotionally layered partnership that rewards every small step toward trust.