I visited this dungeon again on my most recent leveling sweep and found that with 40 AB and 50 AC, i was doing pretty okay.
Until I met the Jailmaster.
Not only does this guy have enough AB to hit 50 AC consistently, he also KDs you and penetrates all forms of DR spells. If you're in the low-to-mid level range for the writ, you most likely won't have enough discipline to resist his KD unless you've geared it.
Additionally, you can't even seem to hit him even with 40 AB, even if you've flatfooted him with spells that cause Blindness or Stun or other such effects.
I think this guy needs an adjustment. He's stronger than Brandicca.