Board Thread:Spoilers!/@comment-1916997-20151015124305/@comment-24674051-20151015151610

Actually, I was thinking of the possibility of the Flying Dutchman for Killian's Dad, particularly with some of the Underworld references we've been seeing recently (Charon and the Fury). And it would provide a great backdrop for introducing Killian's father, who had abandoned Killain and Liam as children. Maybe he didn't abandon them, but was trapped on the Flying Dutchman, and has suffered it's fate (giving a means of introducing Killian's dad in present day).

But I would be fine with Treasure Island being introduced.