With the forewarning, the party can retreat along the corridor to a safe distance from which to bombard the nearest necrophidius with spells and arrows.

Both of them emerge from their sockets with an unsettling rattle of bones, each little more then a skull attached to an elongated spine with rib-legs for locomotion. Both can be shot to pieces before they pose any danger.

With that issue resolved, they return to the corridor and examine the other skulls more closely. Suddenly, each of them turn to face the intruders and spit acid at them! 

But since only Oriana and Caron were in the room at the time, they suffer only minor burns before ducking back out. 

"That trap should have to reset. Shall we run through before it does, or take the time to disable the skulls for our way back?"

"How does one even make a magic skull trap... Is it all of them or just some? Do we... Cover them? The pharasmins would not prefer smashing."

"It's an old art, most examples you see are adapting Thassalonian designs, it's not like wandcraft or scroll scribing where there's an established set of principles. The skulls shouldn't be necessary to the function..."

"The derro are all gone, but the necromancer's robe survived. What I could do is tear off another piece and use whatever undead comes from it to set off the traps on our way out."

Oriana meanwhile stretches her hands between the floor and the skulls, then holds that distance between them as she goes back to the barricades.

"No, the tables should work fine, they only need to hold up against one volley. Let's get them set up and fast, with a sacrificial undead as a backup."

It takes about five minutes for all the skulls to be adequately blocked off, and then the way through to the rest of the tunnels is clear. 

The next room is the alchemical laboratory, now unoccupie. It is connected to the boarded-up storeroom that now stores a carrion golem, the small library, and the prisoner pits. 

"Dealing with the golem might be loud and it's not going anywhere, warden first? Think he'd surrender?"

"Yeah, I reckon. Vavana, back me up with a charm if he doesn't immediately."

She enters the room at a charge. 

"In the name of the Queen, you're under arrest!"

"Huh?"

"Sweetie, do come quietly, we can sort everything out afterwards."

The jailer wavers, mind befuddled by Vavana's charm. 

"You - but, master said..."

She can't promise good treatment or fair treatment, she has no idea what the local courts are like. She'll just stay quiet and look calm here?

"You're more useful to your master alive."

"Do we have any restraints that can hold him when the charm wears off? He's a lot bigger up close," Oriana asks over the party link.

Tisharue mutters another elven word to extinguish her sword, then quietly moves to behind the jailer.

She has a bit of rope in with the general adventuring supplies, for her tent, but it's just normal rope. Headshake.

She goes and peers at the cages and their locks instead.

The prisoners are held in steep-walled pits rather than cages, ten feet deep, and they shrink back at the sight of the fox. The best option is probably the table in the stitchery room that the inanimate golem is currently strapped to. If the ogrekin could trade places with the patchwork corpse, that could probably restrain him.

But she's much prettier than the average wild beast! Downright majestic even.

Feh.

"There's heavy shackles holding a horrible flesh golem, not finished I think, in another room. Or I can whip up something that will last a couple hours and hold unless he disbelieve it hard enough."

"That'll do. Tisharue, poke the golem, then dump it out. We'll be right over."

Verbally, she continues.

"Come on, big guy, we'll get you strapped down in the next room over. If your master comes back before us, why, he can just unstrap you again."

Oriana and Vavana go to escort their prisoner, leaving Caron and Weiss to deal with the captives here.

"Citizens of Korvosa! You are being rescued, by will of the queen!"

"Weiss, do you have rope or a ladder we can lower them?" She asks over the link.

"Queen? What queen?" One of the braver captives asks. The sight of a Sable Company Marine is a reassuring one to them.

"Yeah, yeah... These will last a few minutes."

She peers into the first pit again and a sturdy wooden ladder appears in a descending trail of little golden sparkles. Any other pits get the same.

"There's been a bit of trouble upstairs too! I guess you'll get to ask around in a bit, once you're out of this horrible place."

The prisoners cautiously climb out, an admonishing look from Caron ensuring that the more injured among them are helped up by their pitmates. 

Another stern gesture is needed to keep them from all rushing out as soon as they are freed and getting lost in the tunnels. Instead they mill about anxiously, talking in low voices and keeping their distance from the magic talking fox. 

("It's a druid, I tell you, I told you they were good people in the docks.")

("Can't say I'll miss King Arabasti. You think his pretty wife's the new queen, or has another Domina showed up?")