P J Brackston books in order

Bavaria, 1776.

When Albrecht Durer the Much Much Younger's Frog Prints go missing, he knows exactly where to turn for help. Gretel (yes, that Gretel), now 35 and still living with her gluttonous brother Hans, is the country's most famous private investigator, and she leaps at the opportunity to travel to cosmopolitan Nuremberg to take on the case. But amid the hubbub of the city’s annual sausage festival, Gretel struggles to find any clues that point toward the elusive thief.

Even with the aid of the chatty mice living under her bed, the absent prints remain stubbornly out of view, and Gretel is forced to get creative in her search for the truth.

The small, sleepy town of Gesternstadt is shaken to its pretty foundations when the workshop of the local cart maker is burnt to the ground, and a body is discovered in the ashes. It is Gretel who notices that the cadaver is missing a finger. At first she does not see this as significant, as her mind is fully focused on a new case. Not that she wouldn’t far rather be investigating an intriguing murder, but her client is willing to pay over the odds, so she must content herself with trying to trace three missing cats. It is not until she is further into her investigations that she realizes the two events are inextricably and dangerously connected, and that the mystery of the missing cats will lead her into perilous situations and frightening company.

Very soon Gretel finds herself accused of kidnapping Princess Charlotte, twice locked up in the cells at the Summer Schloss, repelling the advances of an amorous troll, strapped to a rack in Herr Schmerz’s torture chamber, and fleeing a murder charge. With dubious help from her brother (whose scant wits are habitually addled by drink), she must prove her innocence, solve the puzzle of the unidentified corpse, and find the stolen cats before they meet a grisly end.

Gretel—yes, that Gretel—is now all grown up and working as a private investigator in 18th century Bavaria. Her professional interest is piqued when she begins to hear whispers of of mysterious goings-on off the coast of Schleswig-Holstein: sailors are disappearing, and there are rumors of mermaids and sea creatures and all manner of slippery, sea-based happenings. Ordinarily, Gretel’s interest in sea-life does not extend beyond that which is edible, doused in butter and garlic, and already on the plate before her. 

However, funds are low, and the captain of the ship Arabella makes a tempting offer of good pay and a free cruise in return for her detective services. With a splendid new wig packed, Hans as her bodyguard on the journey north, and the promise of two weeks of fine dining and erudite company whilst sailing around the picturesque Friesian islands, what could possibly go wrong?

When Gretel—yes, that Gretel, now all grown up and working as a private investigator—takes on the case of a missing sorcerer, she doesn't realize that it will take her into the heart of the deep, dark woods, and face to face with an old enemy...

Gretel has never had any time for sorcerers, considering them nothing more than show-offs with questionable fashion sense. It is with some reluctance and a deal of grumpiness, then, that she agrees to look into the matter of a murdered magician. All that is left of him is a grisly remnant, which the police quack confirms is the murdered man’s appendix. What has become of the rest of him is baffling the local constabulary, the Sorcerers’ Society, and, not least, the hapless trickster’s widow.

As Gretel delves into the facts behind his disappearance she discovers no shortage of suspects. In fact, just about everyone she meets had reason for wanting the odious man dead. Her only clue points in one disturbing direction: the deep dark forest. So it is that Gretel, with a reluctant Hans as porter, must trek into the woods of her childhood trauma, braving all manner of discomforts and dangers—not least of which is a terrifying reminder of her past.