Direct answer
Objectives follow journal display order. Some depend on your choices; follow the active objective in the game.
Result
A horrible curse had befallen Fyke Isle and the tower that stood upon it. Half a year prior, Lord Vserad had moved his court there, seeking shelter from approaching Nilfgaardian armies. While famine raged all around, the lord of Velen wallowed in excess and cared not a whit for his suffering vassals. The gods saw fit to punish him and, towards this end, cursed him. One day, a host of mice scurried into the tower and proceeded to devour everything, including Vserad, his court and his resident mage, Alexander. The isle had been haunted since that day, and fishermen feared to sail the lake, putting yet another dent in the already battered local economy. The local peasants thus asked Keira to lift the curse, and she turned to the witcher for help. Enticed by Keira's charms and her promise of additional rewards, Geralt took on the task. The sorceress equipped him with a magic lamp he could use to commune with dead souls, gave him a firm pat on the rear for good luck and sent him off to lift the curse.
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