Duncan should be an old man now himself. Every day since his guards had started mocking him with tabloid photos of his wife remarrying, only thoughts about his son had remained to torment him and making his captivity close to unbearable for many many long years. As far as the world had been concerned. As far as his wife and son were concerned also, Wietse had died in a lab explosion.

making -> make
had been concerned. As -> was concerned, and as