The prison complex is an older establishment lying beneath the cistern, and reaches back to the age of Justinian. Newly disclosed stairs let down to a T-junction of several doors. Within is a storeroom that holds a skeleton and a cursed keyring, whose accursed keys unlock a cell that bursts asunder and lays bare a screaming fire elemental.
Among the further findings are a scroll that entraps a man, the skeletons of an elven woman and a human man, a spellbook, a note, and two healing draughts. A massive central door is strengthened with chains, locks, spines of metal, and pictographic markings, and carries a strong anti-magic field aimed inward. Viewing-slits afford a glimpse into a richly furnished cell that holds Mahidevran Hatun, a The Shahmeran, and a turbaned vizier-like man, and into a torture room furnished with rusted hooks, saws, pins, and knives. The party prised open a damaged cell-door and freed The Shahmeran, who declared herself a sorceress.