"I suppose that's true. If you can't suspend your disbelief for the ghostly waitstaff, then I'm sure you'll find the rest of it just as ridiculous..."

Well, better just get to it! "The Captain can control this reality, with the help of extensive sigil magic. The ship and the sixteen kilometers of ocean around us are all his doing, along with whatever excursions he puts us through. And due to a short-sighted experiment on his part, the water you've been dutifully drinking has been imbued with some magical qualities."

Still with him? Hopefully so, because Skulduggery isn't about to slow down. "You'll find yourself later realizing you've said either too much of the truth, or told too many outright lies. The only reason we aren't dealing with that on top of some kind of insane excursion is likely because the Captain's been sulking about it since it happened."

Not even truth-serum'd -- he's Just Like This.