Excellent maps. Bregan Manor has a great, Conan-stealing-into-the-garden kind of vibe.
I think the site description and layout are excellent.
But the adventure feels a bit too much like the players are being dropped into a lore-dense short story for my tastes -- I would prefer a bit more freedom for the PCs, especially with the possibility of instant death just a few bad dice rolls away.
Is the pact itself a scroll? It appears to both be the legal contract and a physical object, but I think I'm missing what the physical object itself is. (I assume it's a scroll.)