Fiona Figg Mystery Books in Order

The Fiona Figg books start in London in 1917, with war in the background and Fiona herself at a turning point. Her husband has been unfaithful, her home life is in pieces, and ordinary office work at the War Office is not enough to distract her for long. So when the chance comes to do something useful, and a little reckless, she steps into intelligence work with more nerve than training.

She turns out to be very good at it.

What makes the series fun is the gap between how Fiona looks on paper and what she can actually do. She is a file clerk, not a glamorous spy, and that gives her room to surprise everyone, including herself. She notices what others miss, she is stubborn in the best possible way, and she has a gift for disguise that gives the books a playful streak even when the stakes are serious.

The setting matters a lot. These mysteries move through wartime England and Europe, from country houses to grand hotels and formal balls, all under the pressure of World War I. In Betrayal at Ravenswick, Fiona is sent to watch a suspected traitor at a country estate, and that mix of murder, suspicion, and social performance sets the tone for what follows. The war is never just wallpaper. It shapes travel, class, secrecy, and the sense that any polite room might be hiding something dangerous.

These are spy stories, but they are not grim military thrillers. They are lighter on their feet, more interested in character and clever setups, and full of the small pleasures Fiona cares about, especially a good cup of tea, sensible shoes, and a well-timed disguise.

There is also an ongoing emotional thread that gives the series extra lift. Fiona is rebuilding her life at the same time she is learning how to investigate. Her encounters with the slippery Fredrick Fredricks, along with the arrival of Archie Somersby, give the books a romantic tug without crowding out the mystery. What stays central is Fiona's growing confidence, book by book, case by case.

Expect a historical cozy with real bite. The murders are clever, the pacing is brisk, and the humor comes from Fiona's dry point of view and her refusal to act like the sort of woman her time expects. If you like amateur sleuths, wartime intrigue, and heroines who would rather solve the case than wait to be rescued, this series is an easy one to settle into.