Ruli Castle: Prison
Talk to the party members, and Horrace. The prisoner on the far left has an Identify and Weapon shop.
After being led to a trial room, Jirall will begin 'prosecuting' you. Choosing the 'Left choice' will not work, and choosing the 'Right choice' won't matter either.
Out of desire to protect Calista, Zael refuses to defend himself and is whipped.
Zael has a flashback involving Dagran and himself when they were young.
After you are returned to your cell, talk to Horrace twice to move on to Chapter 19.
Lowell will stay behind to keep watch.