Latest blog post: An unforseen hiatus. (2023-01-02)
Well we still have these creatures labelled as "Ghosts".
This doesn't really answer Gharr's question though and it suggests they might not even know the answer. I mean, sure he starts going ballistic and extreme paranoia/conspiracy theory nut, but since Val doesn't know why Dan was so sure his brother is a doppelganger there's no indication of what started it.
The other strange thing is that Dan has an intense hatred for military, governments and humanity... But he's adoring of aliens? Suggests that Dan believes the government has the technology and capability of creating doppelgangers and aliens aren't responsible.
Hopefully it really is some strange mental or child trauma, or his brother simply being very different from the intense training and Dan reading too much into it.
As usual, the million dollar question is: Why would the Doppelgänger return "home" and risk detection, unless he has some mission to fulfill right there? "I'm still with the army, and quite busy there" would have avoided his Dantection quite easily.
Sure, it would make for a lot of plot if there's something of interest to extraterrestrials within Dans own family, but ...
Well, the first conclusion (the service changes people) is actually quite reasonable, and children/teenagers can clue in on the subtle differences and changes in a person while closing their mind to the explanation; thus not understanding why that change happened - which leads to the false, second conclusion of suspecting a doppelganger.
I would suspect, just from this sparse narrative, that the brother had some traumatic stuff happening to him. PTSD, robot-like behaviour, not recognizing Dan at first sight (because Dan had grown too), less affection towards Dan... and bam.
Yeah, Age difference of 24 years. Dan would be at least 6 in those images so it's hard to imagine the brother starting military service that late in life.
Still... I can't help but notice that Dan is well aware of the military base nearby... and this house is supposed to be Dan's so I could see his brother being there.