Sperow is a liar, Sperow is a cheat, Sperow will not hesitate to deprive you of whatever currency he can. Sperow also, much to his consternation, has been developing a conscience. It started at some point at the Chelaxian estate where he had been raised and forced to labor under threat of terrible punishment. After catching the foreman's ire one too many times, Sperow decided enough was enough and escaped but not before making sure that foreman would no longer trouble anyone.
That simple act of retribution would later develop into something more. Next came the governor. There were people in Cheliax who were sympathetic to escaped slaves. Sneaking and hiding with the fur-foots, trying to avoid being recaptured, forced him into the company of one of these kindly souls. A carpenter living in some Chelish coastal town or other whose name honestly escapes memory. The man was of meager means but invited Sperow and two others into his family's home and hid them from their pursuers.
The food was awful and clothes ill-fitting, Sperow had had enough of both of that back in his horrid home. He decided to do something about it and since there was little legitimate work for a man bearing the brand of a Chelish slave he decided to put his other talents to use. One seduced wife later and he had a very shiny key. It took him two more nights to find a proper method of infiltration.
The money left under floorboards of the carpenter's home? Well, Sperow would look awfully suspicious hauling great quantities of coins as he left town. The fact that evidence revealed during the investigation of the theft of the governor's corruption and pocket padding? Sperow had to find a way to keep the man off his trail as he high tailed it out of town. The carpenter's young daughter who learned how to stand up to bullies? Look, get off his back, okay?
From there he headed north along the coast, he initially had a route picked out for Andoran but the more he heard about the place, the more intolerable it seemed. Varisia sounded far more promising. So up the coast he went, generally lying his way along to a life of relative comfort. Eventually, he landed in Sandpoint, washing up like so much flotsam upon the shore.
He has been living off of the last of the gold liberated in Cheliax all those months ago. If Sperow does not get the chance to change his fortunes soon, though, he may be reduced to the very menial labor he so violently escaped. Granted, the pay will be better this time but the idea insults him.