(Big spoilers ahead for the April 12 episode of HBO’s “Westworld”)

“Westworld” has not traditionally been the sort of show in which random coincidences happen. Everything that happens, generally, is somebody’s plan. So the idea that Caleb (Aaron Paul) and Dolores (Evan Rachel Wood) met purely by chance and Dolores just happened to like him enough to let him join her revolution, well, just kinda seems like a bit of a stretch.

But we never got any kind of indication that their meeting was anything other than just a random thing. Though this week’s episode, the fifth of “Westworld” season 3, throws a wrinkle into Caleb’s whole story that could indicate a reason why Dolores hooked him: that maybe, just maybe, he’s got a secret identity that he doesn’t even know about.

Now, I don’t think that “Westworld” showrunners Jonathan Nolan and Lisa Joy would hint in this direction if there weren’t something to this. So for the moment I’m going to just assume for the sake of this argument that some or all of Caleb’s history is fabricated, and it’s his true past that led Dolores (Evan Rachel Wood) to bring him into this whole conspiracy to take down The System.

But I wanna take this a step further, because I think I know who Caleb actually is. I think he’s Serac’s brother, who we learned about for the first time in this episode. And I think Dolores knows this, and somehow arranged his involvement in her situation back in the season 3 premiere — remember, she did use that incident to kill and replace Connells (Tommy Flanagan), so we could very well assume the whole thing was a setup.

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I really just have a hard time imagining any other reason, aside from doing a red herring, why “Westworld” would introduce this long lost Serac brother and stick Caleb with an identity crisis like this in the same episode. But I’ve also got some evidence here.

Things first start to get weird when Caleb, Dolores and Liam (John Gallagher Jr) are meandering through the underbelly of Los Angeles. Dolores gives him his smart glasses back so he can run her through Incite’s System, and he comes up empty.

But then Liam scans Caleb, and says something weird: “You think I killed your friend?” Okay, so we only know about one dead friend that Caleb ever had, his army buddy Francis (Scott “Kid Cudi” Mescudi). Why would Caleb think Liam, or Incite in general, was responsible for Francis’s death? I don’t know, and maybe that’s beside the point for now.

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But clearly Liam saw some other important things about Caleb, because later on, when the three of them are on the beach with Ash (Lena Waithe) and Giggles (Marshawn Lynch), Liam says something eve weirder to Caleb: “You don’t even know who you are.”

It’s possible that he meant that in the metaphorical “know thyself” sense, rather than literally referring to his actual identity. But I don’t think so.

That comment triggers something in Caleb, and he flashes back to a scene in which he and Francis are leading a man, whose hands are tied and has a hood covering his head, into some kind of abandoned warehouse.

After Ash shoots Liam, Caleb’s flashbacks continue, and we get a few very quick bits that we’ve seen in a previous flash. But there’s one in particular I’m interested in: Caleb, strapped to a bed or gurney, wearing some kind of goggles and struggling to get free.

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This bit I find so intriguing because of something from the other major plot thread this episode: Serac’s backstory. Serac says that the System can never quite work as long as there are people out there whose behavior is, well, anomalous. He refers to them as “outliers,” and it turns out that his brother, Jean Mi (Paul Cooper) is one of them.

Serac has a facility of sorts for these people, as we see in the episode. He puts them in these tiny apartments with glass walls, but he doesn’t just keep them locked up there. He’s doing something to them. He’s changing them, he says. But it’s never specified what that means. But it’s hard not to draw a line between that flashback of Caleb strapped down and wearing those goggles, and this facility where Serac kept these outlier folks.