The Pieter Van In Mysteries is an omnibus of the only four titles in the Pieter Van In series (by Pieter Aspe) that have been translated into English – at least according to SYKM. The omnibus has dropped to $3.99 at Kindle and Kobo US, and it’s discountable at Kobo. All of the titles have been on sale individually before at various times, so check carefully before you buy. I’ve read and enjoyed all four of these, and wish that some more of the remaining loooooong series would get translated from what I assume is Flemish.
The titles in the omnibus are: The Square of Revenge, The Midas Murders, From Bruges with Love, and The Fourth Figure.