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So you’re playingBaldur’s Gate 3,and you’ve decided to make a murderous, morally conflicted Dark Urge Origin Character. You’ll be used to the more unhinged dialogue options and intimately aware of how different this playthrough is to other, regular playthroughs - that Bard didn’t stand a chance - but Act 2 presents the first actual moral quandary that the Dark Urge faces.
After meeting (and saving) Isobel at the Last Light Inn, a nighttime meeting with your murderous butler, Sceleritas, presents you with a certain quest: kill the kindly Cleric. You’re promised a powerful reward in return for the completion of this task, but is it worth it?
Updated July 11, 2025, by Zoë J. Osik:We’ve updated this guide to include some details on acquiring the reward for this quest in an alternative fashion, and what the consequences are if you choose not to kill Isobel!
Killing Isobel: An Overview
So if you’re here, you’re probably wondering exactly what will happen if you do actually happen to go through with Sceleritas’s quest and kill Isobel. She obviously doesn’t deserve the mindless violence, and it’s hinted that some very bad things will happen upon her death.
First, an overview of what actually happens in the process of killing Isobel:
These actions and reactions have somedeeper knock-on effectsthat you’ll want to be aware of, notably similar to those that occur if she falls in the battle against the rogue Fist:
And what about yourreward? We’ll go into detail at the end of the guide, but to spoil it quickly here: for killing Isobel and dealing with the fallout, you’ll be rewarded with aunique shapeshifting powerthat turns you into a bloodthirsty monstrosity.
It is possible toacquire this shapeshifting reward without murdering Isobel, but it will require a different sacrifice. Scroll down to the end of this guide to find out what this is.
How To Kill Isobel
Once you’ve obtained the quest to kill Isobel, the first stage of the quest is as easy astraveling back to Last Light Inn and provoking her into a battle. You can either do this through a dialogue or simply by attacking her - both options will work, as long as Isobel dies.
Notably,attacking Isobel will also draw the ire of the Harpers and Fistswho witness the fight - including Jaheira. While it’s possible to keep the battle stealthy and out of sight, you don’t need to. Isobel doesn’t have much health and the battle will end as soon as she dies, with the quest progressing to the next stage instantly.
Even ifJaheira joins the battle against you, it’s not a guarantee that she will turn on you in the next stage of the quest.
52
11
9m
12 (+1)
14 (+2)
10 (+0)
16 (+3)
Isobel is quite a frail combatant. While she can roll highly and deal a lot of damage with herGuiding Boltspell, it’s more than possible to finish her off before she gets a second turn.
With such low AC, a few characters making concentrated attacks directed at her will down her quickly. Even more so, if your martial characters have reached Level 5 and obtained theirExtra Attacks.
Ideally, you’ll be able toignore every other combatantin this fight and burst Isobel down as soon as possible. Remember,the battle ends as soon as she dies, and you’re automatically relocated as part of the ensuing cutscene, so you should not worry about setting up the next fight.
The Confrontation With Jaheira
When Isobel dies, a cutscene will play in which Jaheira confronts you (if she’s alive). She’s instantly suspicious of you, but you have some options to deal with this.
Dialogue Option
Effects
[DC 16 Deception Check] Convince Jaheira that there was a terrible accident.
Success: Jaheira will believe or agree with you and will be friendlier to you after the fight. It will be possible to recruit her to your campsite with this option.
Failure: Jaheira will be antagonistic to you after the fight and may attempt to kill you herself.
[DC 18 Persuasion Check] Convince Jaheira that an enemy infiltrated the inn.
[DC 18 Persuasion Check] Convince Jaheira that there’s no time for argument.
Admit to Jaheira that you fought with Isobel and killed her.
Jaheira will be antagonistic to you after the fight and may attempt to kill you herself.
If you manage toconvince Jaheirathat you were not the responsible party, the next post-battle conversation with her will give you the chance totemporarily recruit her to your campsite. If you fail (or simply admit to your actions), the conversation is destined to go poorly.
No matter how the conversation went,Jaheira will be an allyin the next fight against the turned undead of Last Light Inn.
The Fall Of Last Light Inn
Regardless of how you deal with Jaheira,the protective shield around Last Light Inn will fall, and you’ll be thrust into a battle against a horde of undead Harpers who succumbed to the curse.
In total, you’ll be fighting the following:
While there are a lot of enemies to face in this fight, none of them are all that threatening. Treat this encounter as a marathon rather than a sprint - conserve your resources. This is especially important as more enemies will join the fight once you’ve felled enough of the original pack.
As your enemies are allUndead, you should have some very powerful tools to deal with them if you have a Cleric or Paladin with you - Shadowheart is a brilliant companion to bring along to the fight.Turn Undead and a Radiant-elementalSpirit Guardiansspell will work wonders.
Jaheira will be fighting alongside you for this fight, and will likely useIce Stormearly on. If she targets it well, she’ll damage a huge chunk of the enemy horde and also create a large patch of ice that will knock them Prone when they walk over it.Jaheira isn’t shy about targeting your party members with this spell, so be wary.
Once she’s cast Ice Storm, her likely strategy will be to shapeshift into a Panther and start knocking out individual Harpers.
After you’ve dealt with a good chunk of the enemy horde, they will be joined bythree Shadow Creepers. These only have eight hitpoints and go down easily. Make them your priority target, though, as they have an annoying habit of traveling around the battlefield quickly and knocking your party members Prone.
After beating yet more foes, you’ll again be beset by more enemies. This time,two Shadow Creepers and two Giant Shadow Creepers. These have more hit points and are far more threatening than their smaller brethren, so make them your utmost priority targets when they show up.
Dealing With Jaheira
After the fight, if Jaheira survived, you’ll be thrust directly into another cutscene with her. If she believes you to be Isobel’s killer, she’ll confront you angrily. At this point, you may eitherpass an Intimidation checkto make her leave you alone, or you will have tofight her there and then.
With a party of four against one,it should be quite easy to beat Jaheira, even if she supplements her health pool by shapeshifting into her Panther form. Don’t feel too bad if you have to kill her - you can loot two niceScimitarsfrom her body.
If you manage to make Jaheira leave you alone,don’t pursue her if you want to avoid a fight. If you get too close for too long, she’ll fight you anyway.
If she believes you to be innocent, however, a different conversation will play out. You do have the choice toadmit to your murder, but all that accomplishes is pushing you to the conversation choices you would have had if you’d failed the speech check earlier.
It’s possible to get Jaheira to join your campsite as a temporary companion, be sympathetic and hopeful in your dialogue choices:
She can’t be added to your party yet, but it’s neat to have her around. You’ll encounter her on the overworld again when it’s time tostorm Moonrise Towersand confront Ketheric Thorm.
Your Reward: The Slayer Form
Well, this is what you’ve been working towards: your reward. After the events at Last Light Inn, the next time you take a Long Rest, you’ll be visited bySceleritasagain. He will grant you a new power:the Slayer form.
This form works like other Shapeshifter forms (such as Jaheira’s Panther form, as you might have seen earlier). The Dark Urge will become a Slayer beast, with its own health pool of 98 hit points, its own attacks, and a terrifying +9 bonus to Strength rolls that it uses for murder. you may use the Slayer form once per Long Rest.
Description
Let The Slaughter Begin
Allows you to Brand a target, Dazing them temporarily. If you manage to kill that target within four turns, the Slayer gains +1 AC.
Sumptuous Blood Bath
A strong melee attack that causes the target to Bleed. This will heal the Slayer.
Relentless Lunge
A leaping attack that consumes your Bonus Action and 3m of Movement Speed. It deals damage in a radius around your landing and may knock enemies prone.
Not too shabby a reward, but is it worth Isobel’s life?
How To Get The Slayer Form Without Killing Isobel
If you go into theGauntlet of Sharandlet Shadowheart kill the Nightsong, this will not count as you killing Isobel. Instead, Scelaritas Fel will visit you at camp and scold you. He warns you ofa different sacrifice: your lover.
Whichever companion you are romancing (or are closest to), will be lying in a blissful sleep. You’ll beginrolling saves to stop yourselffromkilling your companion.
If you fail, you’ll have to face your remaining companions. If you manage to pass a save, you canconvince them that your companion attacked you, but the odds are slim. The most likely outcome is thatyou will die, and if you manage to defeat them all,you’ll continue your adventure alone.
Killing your lover willreward you with the Slayer Form, so it may be a sacrifice worth making if you missed your opportunity to kill Isobel.
If youdon’t kill Isobel, and you stop yourself from killing your lover, you willnot be able to obtain the Slayer Form. Weigh your options carefully.
