Status Updates From Schaduw's bedevaart

Commissaire Charles C.M. Carlier of the Sûréte Nationale also known as the Shadow for has been called to Lourdes home of Holy Bernadette as a favor of a friend whose travel companion died of poisoning after drinking Lourdes water. And everybody knows you get healed not killed. So a job for the Shadow........

A restart of reading of this book, it concerns the Dutch written hero called the Shadow in which a pilgrimage is involved.
The writer Havank is a genius with the Dutch language and it shows, he was also the translator of Charteris Saintly hero into Dutch. Which is how I discovered the translator his own books.