[RPG] How are the characters supposed to open this door in the Sunless Citadel module

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Warning! May contain spoilers if you are playing the Sunless Citadel module from the Tales of the Yawning Portal book.

We are playing this module and the party is still level 1 (cleric, paladin, barbarian, wizard and rogue).

In one of the early areas (26), there is a locked door which can only be opened with the knock spell or with an effect that turns Undead. As described, I don't think that thieves' tools would do it.

How can the PCs open this door at level 1? Should they come back later when they are level 2?

I am also interested in how this was in the original version of the module.

Best Answer

Spoilers ahead

There is a room further into the campaign that has a caged gnome acolyte (Erky) who has access to the turn undead feature, who offers to join the party. Alternatively there is a Scroll of Knock on the alter by the Kobold Queen which you could steal, or take as a reward for getting the dragon back. Finally as I see you have a cleric, you can return at a higher level and use channel divinity to turn undead.

Source: Currently DMing this campaign