So, once you get by the Slavepen Master, you can either make a run for it to 7 (the sewer entrance) or kill the head Templar at 6 for the magic sword Bloodwrath.
He will help you escape, but he is in fact leading you into a trap. You will have to fight before you can give him the gem you found. 4-Open the secret door by pushing button on North wall. Talk to the girl again to get the location of the secret door. 3-Talk to the cook, lead him to the girl.
If needed you can rest in the eastern cell on a circle of stones. She will dismiss you, because of a headache.
