I'm cross eyed.
Watched both PCs and have caught up here with the comments.
If it weren't for John, this might not have been solved, at least not for some time.
The guy was prepared. Untrackable phone, with possibly European Sim cards, the different license plates including one that was no longer on the registry, hotel rooms here and there, etc.......but also various mistakes, should have abandoned the Brown plan as John was far too nosy.
Yes, some kind of 25 year grudge, probably a failure in his work and life unlike his brilliant successful co-student from Portugal. Was he married? If so maybe that too didn't work out.
I need to eat, dinner time has been non existent the last few days....just quick cold stuff from the fridge, and crackers.
My thoughts are with the victims, the families, and the students still in the hospital.