"W-we think there is p-probably something valuable in the l-locked room? Some b-books mention more..."

"But nothing else you've personally found so far."

"No."

"Alrighty. Thank you so much for your cooperation. I am now going to gag you and tie you up, if you're well-behaved we won't need to knock you out."

"Kill her. We got the information we needed."

She whimpers involuntarily.

"Love, if you predictably kill people who give you what you need they won't give you what you need. I want it to be possible to be cooperated with. Trust me. I know what I'm doing. If I fuck up and we fail at anything you can start ignoring me then."

"Tsk."

Shadowheart is definitely approving, though.

He aims to please.

So before anything they should check that her claims about the rooms other than the main crypt are true, which means they should still be careful just in case she was trying to lure them into a trap.

She wasn't.

He didn't think so, no.

"Do not charge in. The door's bottleneck is advantageous to us, since we're outnumbered and I am very fragile. I will draw them out and we can take them out one at a time." He looks at the human. "Are you particularly fond of any of your companions? Not that I'm promising to spare them, but I can think about it."

Headshake.

"Excellent. Let's do this."

They don't manage to finish the fight without any injuries, but all in all it's a pretty bloodless affair. On their end, that is; there's enough bloodshed to satisfy even Lae'zel, after Astarion entirely fails to be sufficiently diplomatic to avoid a fight entirely. One of the hunters begs for mercy, so Astarion merely knocks him unconscious, but the other three unfortunately perish of their injuries.

"Yes. This spilled blood exalts Vlaakith's glory."

Whatever you say, sweetheart.

Time to explore.

One might imagine that the human from earlier doesn't know what the word "crypt" means, as this is most definitely not one. There aren't any tombs or coffins, only a statue to an unknown god with a plaque in an unrecognisable language and numerous books.

Roll Perception.

Sorry, what?

While exploring the place Astarion notices one specific candleholder attached to a wall is somewhat crooked compared to the others, and not in a way that looks best-explained by age.

...he does?

Indeed.

He's so talented.

Well, nothing to it, then: time to pull the obvious lever!

It has the effect one would expect: the handleless locked door opens. And the room it opens to is... mostly empty, but there is another door in there probably leading to the actual crypts.

Plus some banners that have not frayed to nothingness with the centuries.

"...that symbol. I... recognise it... but I can't remember where from."