A Gothic horror rooted in Amsterdam's drowned history, Pieter Jansz threads ancient guild oaths and canal-rot into a tale of ghosts, grief, and women who refuse to vanish. When Mara Veen is dragged from the IJ beneath the iron ribs of Centraal Station with no family, no money, and no memories of how she fell in, the only refuge she finds is the mold-slick maze of the Jordaan. There, above a herring stall on Nieuwmarkt, she carves out a life as a ghost-talker for a salvage crew called "De Stilte," prying stories from rings, lockets, and waterlogged mouths recovered from the city's black arteries. The leaning houses of Brouwersgracht and the rope-scarred boats along Prinsengracht become her home and her haunt.
Then the past Mara can't recall sends up a relic: a warped oak panel hauled from the silt beneath Keizersgracht Bridge No. 31, its paint filmed with river-scum and signed in lampblack, "Pieter Jansz"—a name stricken from the Guild of St. Luke since the Egelantiersgracht fire of 1693. Almost at once, an unusually powerful ghost infest Amsterdam's waterways. Fog curdles on the Amstel locks; lovers on Magere Brug vanish mid-kiss; cyclists are yanked, screaming, from the narrow lip of Herengracht. The thing calls itself Jansz. It claims to have painted Mara "before you were born," to know the lullaby she hums and the crescent scar hidden beneath her hairline. It speaks of a studio that burned, a ledger of sitters with their names scraped thin, and a seal impressed in beeswax and blood.
Drawn into a deadly cat-and-mouse through warehouse lofts on Prinsengracht, midnight markets along Haarlemmerdijk, and under the stone shadow of the Oude Kerk, Mara reads the city the way she reads paint: smalt ground to dust, verdigris eating into gesso, pentimenti surfacing like bruises. Each clue knots to a procession of women erased—faces overpainted, throats stitched shut in underdrawings, signatures buried beneath fresh varnish. As the tides swell and the sluices choke, she begins to fear the monster stalking the canals is a portrait started with her own hand. To stop the drownings, Mara must unmake a painting that refuses to dry—and decide which life trapped in the varnish is allowed to set.