The canals of Amsterdam have kept secrets for four hundred years.
When a young Ghanaian woman is found dead on the Herengracht - positioned with the same chilling precision DCI Thomas Walker has seen in Barcelona and Berlin - Dutch police are already writing it up as suicide. Walker knows better.
Suspended from the Metropolitan Police, operating without authority in a country that didn't invite him, Walker teams up with Detective Pieter van der Meer, a Dutch investigator with his own reasons for refusing to look away. Together they trace a recruitment pipeline hidden inside Amsterdam's fashion industry - one that leads through the city's most anonymous streets and into the archives of Dutch intelligence itself.
The AIVD moves to shut them down through legal channels. A survivor surfaces, terrified but willing to talk. And the more Walker uncovers about Amsterdam's Cold War past, the clearer it becomes: Operation Black Rose did not begin in Barcelona. It was built here, on trading routes four centuries old.
With a deportation deadline counting down and evidence that cannot be prosecuted but cannot be ignored, Walker must do what he has always done - document, expose, and move on. Because the next city is already waiting.
Murder in Amsterdam is the third book in the DCI Walker Crime Thrillers series. It can be read as a standalone, but readers of Murder in Barcelona and Murder in Berlin will recognise the pattern.