Approach him
From Create Your Own Story
As you make your first tentative steps towards the man, you feel something in your palm, and you realize you're holding a large, metal object. It's an oddly shaped key, perhaps designed to open these cells.
"You're not here to rescue anyone in particular, are you?" He says softly. You hear the smile in his voice. And there's a long silence where he expects you to speak, however, you find that you're too afraid to respond. "Well, in any case, if you let me out of here, I might be able to help you find whoever it is you're looking for."
"I'm-I'm not looking for anyone." You murmur stupidly, still confused. Your voice a stranger to your ears.
"Then why are you here? Nevermind. If you can help me escape, I'll make it well worth your while. I have plenty of silver to spare, in fact."
You don't have much choice, you could do with the assistance. However, you don't know who he is, who else but a dangerous criminal would be locked up down here? You begin to feel your composure returning.
"How much silver?" You inquire.
"That's the spirit! I'll give you enough to last a month. Now, quickly! Before the guard comes."