But the wards that had protected the cottage from Moragacht fall when Caith and Dubhain arrive. Riders from Dun Glas come and capture the twins. Caith and Dubhain (as a horse) give chase, but as they approach the riders, Dubhain is overcome by the witch's magic and falls into the loch, abandoning Caith. Caith and the twins are taken to Dun Glas where they are locked in cells bordering the loch. Caith lapses into a dream where he enters the loch to find Dubhain duelling with the loch beast. He draws Dubhain back to his cell, who in turn calls Nuallan from Faery, the bright Sidhe controlling their destinies. Nuallan gives Caith a silver key to unlock the iron cells and so lifts a spell enabling Nuallan to cast Caith, Dubhain and the twins out of Dun Glas. Moragacht allows her prisoners to escape because with her magic she now holds Nuallan, a bigger catch and her means to controlling Faery.