Brothers Grimm Mystery Books in Order

The Brothers Grimm Mystery books take a fairy tale everyone knows and ask a very useful question: what if Gretel grew up, got practical, and became a private detective? In Paula PJ Brackston's version, she is thirty-five, sharp-tongued, worldly, and still stuck with her brother Hans, now very large, very hungry, and only occasionally helpful. The result is part fantasy spoof, part historical mystery, and part affectionate reworking of old tale logic.

The setting is eighteenth-century Bavaria, and that matters. These are not modern detective stories with a fairy-tale paint job. Gretel moves through small towns, city streets, inns, forests, courts, and coastlines where superstition, folklore, gossip, and class all shape the way people behave. Magic and oddity are simply part of the furniture. Talking mice, trolls, suspicious captains, and rumors of mermaids can sit beside stolen art, missing persons, and very human greed.

Gretel is the anchor. She likes money, food, clothes, and comfort, and she has no patience for nonsense unless it pays well. That makes her a funny guide to a world that is often ridiculous but rarely harmless. Hans provides ballast, chaos, and the sort of brotherly loyalty that usually arrives late and in the wrong shape. Their relationship gives the series much of its charm.

The books work as real mysteries. Once Upon a Crime begins with a burned workshop, an unidentified body, and missing cats. Gretel and the Case of the Missing Frog Prints sends her to Nuremberg after stolen artwork. The Case of the Fickle Mermaid shifts to a seagoing disappearance, and The Sorcerer's Appendix pulls Gretel back toward the deep forest and the fears she thought she had left behind. Each story has its own case, but reading in order lets you watch Gretel's world fill out.

They are proper whodunits, just with better wigs.

What Brackston does especially well here is keep the joke alive without turning the books into parody alone. The tone is witty and often absurd, but the stakes are still real. People disappear. Bodies turn up. Gretel makes mistakes. Old fairy-tale shadows linger in the background, yet the cases depend on clue-following, stubbornness, and knowing when someone is lying.

If you want a fantasy series that feels lighter on its feet than Brackston's witch novels, this is the one to pick up. If you want all the character beats in place, start with Once Upon a Crime and keep going. The books are funny, but they are also about survival after the fairy tale ends, which is a surprisingly good foundation for detective fiction.