Ment
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Oh, so the serum didn't work, huh?
1) These guys are in a snake squad, using unique snake techniques. Logically, this suggests that they also have a snake origin. Snakes are immune to mind control.
2) Revan wrote that immunity protects against the serum.
And so... Well, Asmund asks, and they answer – why not, actually? But whether there's a hidden meaning, who knows.
I just think they told the truth that they acted alone. And it's probably also true that they didn't contact the others (I'm just not sure about Baar). Well, it just seems very likely, given the circumstances. Otherwise, they could have lied anywhere.
Actually, things are definitely not that simple there. They surrendered with this calculation in mind. But I'm not against checking, even though it's extremely risky. It's more fun that way. But I would still finish off those guys.