I've had something on my brain since finding Nightsong in the Sharran temple -- what's up with Aradin and Halsin? Like, what's Aradin doing sniffing around the old temple in the goblin camp? Doesn't he know he's way off-course? I believe datamining suggested Nightsong was to be below that temple at some point, but who knows. As it is, had Aradin even gotten past that puzzle it would've been a complete dead end. But why does Halsin even go with Aradin? Why would he abandon his grove to wander into the goblin nest?
Well, it takes on an interesting wrinkle if we assume the 'Halsin killed Isobel' plot point was true. A brash bunch of adventurers come in, talking about how they're going to find the Nightsong. Halsin goes, oh, the Nightsong? Yeah, I know where there's an old temple, let's try looking there. Except Halsin would know, presumably, that they're way off-course and should be looking somewhere closer to Moonrise. Did he hope that Aradin and co. wouldn't make it back, and so preserve the fact he was instrumental in kicking off the shadow curse?
No idea, but fun to ponder.