It wasn't a caption, it was a short scene of Wayne, his hair beginning to go gray, passing by the classroom where she is reading a poem, her hair also streaked with gray. But it didn't tell you he was chief of security or that she was now teaching at a college.
Although the plotting was a mess, I thought that the underlying theme was that people tend to focus on the stressful times of their lives, just as detective show viewers, like the true-crime documentarian, see conspiracies and evil everywhere. In fact, this was about tragedies piled on top of tragedies, and secrets kept that should have been told. Harris James seems to be the one truly bad person involved and Hoyt and West took care of him, albeit extra-legally. If only Mr. June had not shielded Isabel but had returned Julie, or if Lucy had mentioned the desire of Isabel to adopt Julie to point the police in the right direction. The rest of the deaths, ironically, came about because of the cover-up on one side and the investigation on the other. (I'm not sure how much Hoyt knew at the beginning but he shut things down in order to protect his daughter.)
Sadly, Hays's dementia seemed to filter out the good times and suggest dark possibilities for the gaps his memory left. The last sequence, I think, showed him losing the sunlit scene of his leaving with Amelia to make a life together and instead ending up in the solitary, murderous existence he had in Vietnam. At least his present, when he could remain in it, was not so bad: reunited with his friend, loved by children and grandchildren, just as Julie, too, found contentment.
I have to say I never thought much of Stephen Dorff as an actor--and haven't seen much of his work after his teen-star days--but he deserves an Emmy for this performance. The bar fight and dog-consolation scene were terrific.