Thank you Tobias Lutzi for alerting us to the ECtHR drawing the final curtain (legally speaking at least) over the tragic events surrounding the Krombach case. The case is a classic viz ordre public, recognition and enforcement issues (see CJEU C-7/98). Current decision however relates to the criminal law aspects of the case and the ne bis in idem principle in particular.
The Court declared Krombach’s complaint inadmissible.
(Handbook of) EU private international law, 2nd ed. 2016, Chapter 2, Heading 18.104.22.168.4.