Offer a pardon

From Lord Of Utterdom

"And if I offered a pardon in exchange for the information?" You question.

"Save my neck from the rope if I tell you who hired me, eh?" The man pulls his finger out of his nose and sticks it into his mouth, sucking it dry. "Sounds fine by me."

"Very well. Tell me who it was, and I'll have a pardon drawn up."

The man sits up on the cot, leans in to get a good look at you. He waggles a finger to get you close to the bars.

"It was..." he starts, "...it was....it was Duke Tillasnout, the fat little bastard. He promised me good coin if I silenced this loud mouth who was saying the Duke was plotting to take the throne." He snorted. "I only ever got half of me coin."

Duke Tillasnout? The very same man that had petitoned your father to investigate another Duke for the same reasoning? The plot thickened.

Sign a pardon, as promised and report what you've heard

Have the prisoner's execution hastened to silence him and keep the information for yourself