WMG / Resident Alien

The town of Patience, Colorado will be shown to be in the Never Summer Mountain range...so the snow will never melt enough for Harry's device to be found.

• Seemingly disproven by the third episode, in which one of the residents comments that when the snow melts really depends on whenever it is that they happen to get a good rain and it could be any day now.
• Ultimately, confirmed in a way. The device does seem to have ended up in area where the snow doesn't melt, but Harry still manages to find it anyway, thanks to Max's ability to detect the "green glow."

Harry will get over his Sitcom Archnemesis with Max, and become really close friends with him.

A bit of a shot in the dark, but what better way to be Intrigued by Humanity then to become close friends with someone who you had a petty rivalry with?

• Plausible - as of "The Green Glow," Max actively helps Harry with finding his device by using his ability to detect the titular "green glow." They're not actively friends yet, but it does seem to be moving in that direction.

Harry and Max will be forced into an Enemy Mine situation.

The female government agent is willing to kill any human who knows about aliens. So they both have a reason to be afraid of her.

The female agent is an alien.

This would explain why she's willing to kill humans while her partner is not.

• As it turns out, she ends up standing no chance against a real alien, Harry. However, there is at least one real alien within McCallister's organization.

Asta's mother was an alien.

This would explain her absence and Asta's father's cryptic references to her. Also it would make sense that an alien crash landing in a remote location might meet a Native American man on a reservation as her first human, and bond with him while she recovers.

• Her biological mother is actually a chain-smoking layabout named Mary-Ellen Taylor who never wanted children and who was happy to abandon her at the first chance that she had.

The Greys will appear as antagonists.

Harry mentions them by name twice in the first 5 episodes, both times throwing shade at them, implying his people and the Greys don't get along. This will be foreshadowing for them showing up down the line as antagonists.

• Confirmed - the Greys are the Big Bad of the second season and are planning to utterly desolate the Earth and havec already done so once in an alternate timeline.

The real Harry Vanderspeigle killed Sam Hodges

Given the circumstances of Sam's death, it would seem the killer would have some medical knowledge. The real Harry makes a 'courtesy call' to Sam, tampers with his insulin, and goes his merry way, only to be killed by the alien who replaces him.

• Confirmed - that's exactly what happened.
  • But why?
    • RealHarry and Abigail might have set up a "Strangers On A Train" scenario—Abigail was having an affair, but maybe she and Sam had a prenup that would have meant she'd lose everything in a divorce. Harry and Isabelle are going through a divorce, and either don't have a prenup (so Harry could lose a lot of money), or Harry's thinking Isabelle's art will be worth a lot more if she dies. Since RealHarry had been in Patience before, it's not a stretch to think he and Abigail could have met, and planned it out somehow. In any case, the creators have said we're going to be finding out more in the second season.
    • "An Alien in New York" reveals that Harry and Sam were both apparently investigating shady business with a company called Galvan/Powell Group, but that somebody from Galvan/Powell directed Harry to kill Sam after Sam threatened to go to the police.

Asta and/or Dan will figure out the alien killed the real Harry

Asta didn't pursue the question of what happened to the real Dr. Vanderspeigle when she and Harry were trapped in the crevasse, but once things calm down, she's going to put her mind back to it, and make the connection with the foot found in the lake.

• Confirmed - Asta does put it together and realizes the truth.

Human!Harry’s wife was impregnated by Alien!Harry and is going to have a Half-Human Hybrid baby.

This will be what ultimately convinces “our” Harry not to go through with the plan to wipe out the human race.

• Disproven, at least in terms of what convinces Harry not to go through with the genocide.

Mayor Hawthorne's marriage entered a new level of dysfunction when Sam was killed

• He was using Sam for therapy and either Harry made a terrible substitute or Harry found a way to rebuff the Mayor entirely

Asta was lying to manipulate Harry into not destroying the Earth.

She hugged Harry in his alien form while telling him they were still friends, despite everything—but according to D'Arcy, hugging is Asta's 'tell'.

• Possibly true, but at the same time, it might not matter that much or be as drastic of a black-or-white thing. She probably had a lot of emotions at the time and realized there were more humongous things than whether he killed a guy.

Harry will return as the Patience town doctor in the second season.

With Dr. Stone taken by the government forces, the town is in need of a doctor again. Harry is presumably coming back anyway and since even if Stone does come back he may not be up to much, Harry will end up getting drafted to be the doctor again. He may not even mind since he needs the job anyway and his other attempts at searching for careers didn't go so well.

• Eventually confirmed - Harry does accept Ben's request to become the doctor again after Smallwood is dismissed because he wants to do the autopsy on the guy that Asta killed who tried to kill him.

Harry's speaking voice that the audience hears isn't his actual speaking voice that the citizens of Patience hear

If Harry actually sounded like that, people would get suspicious 10 times faster than otherwise. It's certainly not an accent that can be traced to New York or anywhere else on the planet and considering how odd he is, this would be a humongous liability. This troper assumes that the speaking voice is something that's been added for dramatic effect or we are hearing what Harry's voice sounds like to himself.

We will see more members of Harry's species in the third season.

The Greys indicate that Harry's people have basically ceded the Earth to them, but Harry is trying to put a stop to all of that. One or more of Harry's people will come to Earth to aid the Greys in trying to take out Harry.

Alternatively, the Greys are lying about Harry's people having ceded the planet to them.

The whole goal of Harry killing all humans in the first place was to try to preserve everything else on the planet from humanity's destructive tendencies. Why would Harry's people now be cool with the Greys working to turn it into the desolate wasteland seen in the alternate timeline in "The Alien Within"?