[His explanation was a bit misleading, really - the ghosts don't so much feel indebted to him as they were simply lost and scared after the ordeal, so when he decided to organise the night patrol an give them a purpose most of them were on board with that. Still, some of them did move on - either to the afterlife, even without the usual ritual send-off, or simply to dark and quiet places around Camelot, such as Loch Manor.]

Nothing to thank me for.

[He ponders for a moment.]

I think it'd be worthwhile to reach out to Merlin on this. He's the most powerful mage this side of Camelot, so maybe he can give us guidance on what type of magic would be most effective in destroying the giant. Do you want to speak with him, or should I?

[Sure, they could both roll up at the mage's door, but they do have quite different ideas of how to lead a discussion... (also logistics!)