He sees John later that day.
It's not like a hallucination, not really, but out of the corner of his eye, for a second, he catches a glimpse of the man he loved so dearly, and for even less than a second, he almost thinks it's really John.
Henrik turns in the other man's direction, despite knowing that this 'John' is a figment of his own imagination.
John's gone, now, and Henrik tries his best to carry on as normal for the rest of the day.
When Henrik gets back home from work, John shows up in his peripheral vision again, and stays for a few seconds this time.
Once again, though, when Henrik turns to look straight at him, John disappears.
That night, he dreams of Roxanna.
He dreams of her trapped in her own mind, in the same position that she wanted to save her mother from all those years ago. He dreams of her finally having a way to communicate, only to have her life taken away from her immediately afterwards. He dreams of her having to lie there and watch while she's killed.
He wakes in a cold sweat, shaking and yelling stop, stop, John, please, no before he realises he was dreaming.
(He was dreaming.
Roxanna wasn't so lucky.)