Are you asking about a sequel to Post Mortem set in Europe or any adventure game set in Europe?
Still Life, the sequel of Post Mortem has some parts set in Europe. The sequel to Still Life is still unknown.
There are lots of adventure games that are out and will be released set in Europe. Some set at different time periods.
- New and old Agatha Christies, BS4.
Coming are AnaCapri, AGON4, Belief and Betrayal, Culpa Innata, Nostradamus...