I assume "The Father" is the head of the sociaty of the black cloack. In the end Graham finds out he was disguising himself as his new arms minister, Gervain.
The teleporter takes you to Hagatha's cave because... that's where you've been all along!

if you look on the table you'll find that the little "snow ball" actually contains the entire tower realm!
The game doesn't offer any explanations about the pond, and not about the guy in the haystack either

The Father is looking for an item (they don't say what in the game, maybe they haven't decided yet

). Apperantly, wearing Graham's crown will cause the location of the item to be revealed to him.
Vampires are undead, and therefore do die before they rise as vampires... that's what grandma must have meant.
How did he get there? maybe he swam, stole a boat, or got a ride on some ship...

I liked seeing Anastasia holding him on a leash at the wedding

I didn't know you could finish the game without the youth potion... I'll try to do that
