- In the chest at the foot of the bed in the replica of Ellesime's quarters at the end of the Dryad Grotto.
|“||An intricate key, presumably once owned by the lover of your captor.||”|
- In classic Baldur's Gate II, the Portal Key could not be discarded once it was acquired, like some other quest items. It was only removed from the inventory of the character who picked it up once escape from Irenicus' Dungeon had been achieved. However, in the Enhanced Edition, the key may be dropped at any time.