Talsarios sighs at the prisoners ravings.
"Look chaps," he says, moving over to sit by the prisoners, and addressing the most vocal of them - but taking each of them in his gaze as he speaks, "you've been captured. You're going to hang for these crimes. That's the law round here, see - you've been working for a necromancer." He shakes his head sadly, as if thinking of the waste of human life.
Then, brightly, he adds a more positive note: "You know, there are some people who aid necromancers and get to live after they've been caught - the ones who help catch the damned evil wizard!
"You know, show the authorities or their agents where to find the the necromancer and his undead minions, or something helpful like that - yes, that sort of thing - well, any lawful agent of the authorities will work hard to get your punishment commuted for help like that!
"If only you weren't all bound by the honour of thieves... It's a shame you're all going to die for these vile crimes, isn't it?"

Spoiler
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Persuasion skill: (1d20)[3]
DC = CHA = 10