Wrexford & Sloane Books in Order

The Wrexford & Sloane books are Andrea Penrose's best-known mystery series, and it is easy to see why. The setup is sharp from the start: the Earl of Wrexford is a brilliant, abrasive aristocrat with a serious interest in science, while Charlotte Sloane is a widowed artist who secretly publishes biting political cartoons under her late husband's name. Put them together in Regency London and trouble arrives almost immediately.

So do sparks.

Beginning with Murder on Black Swan Lane, the series follows Wrexford and Charlotte as they investigate murders tied to science, industry, politics, money, and social change. Murder at Half Moon Gate brings in the pressures of the Industrial Revolution. Murder at Kensington Palace, Murder at Queen's Landing, Murder at the Royal Botanic Gardens, Murder at the Serpentine Bridge, Murder at the Merton Library, Murder at King's Crossing, Murder at Somerset House, and later books continue widening the canvas. Penrose uses the Regency not as a pretty backdrop but as a restless world full of invention, inequality, and argument.

That restless energy is a huge part of the charm.

The partnership at the center is another. Wrexford and Charlotte are opposites in useful ways. He has title, access, and a scientific mind that sees patterns fast. She knows how to move through the city more quietly, how to read people, and how to survive without the protections rank is supposed to provide. Neither could solve these cases as well alone. The books understand that, and the relationship grows from that mutual need and respect.

The series also has a strong supporting cast. Hawk and Raven, the street boys under Charlotte's protection, are far more than cute side characters. They help give the books heart, humor, and a view of London that stretches far beyond drawing rooms and gentlemen's clubs. As the series goes on, that sense of found family becomes one of its best features.

Penrose is especially good at tying each murder to the ideas of the period. Chemistry, electricity, botany, printing, finance, libraries, and public institutions all matter. The mysteries are twisty, but they also feel grounded in a society that is changing fast and not always kindly. That gives the books more weight than a simple clue hunt.

If you like historical mysteries with real atmosphere, smart leads, and a partnership that evolves slowly and satisfyingly, Wrexford & Sloane is the obvious place to start with Andrea Penrose. These books are clever without being chilly, detailed without being dense, and serious without losing warmth. They make Regency London feel alive enough to walk into, though you might want to watch where you step.