It's very good, and a creative way to extend the campaigns and a good way to connect them. However, I misunderstood what the product meant when I bought it.
To Clarify: I've been trying to find ways to properly combine the adventures for a while- that is, to combine them. This merely lets you run them back to back, which is fine, but not quite what I'm looking for. I'm not looking for a refund, I like the 'cryovain reaching adulthood' stat block, and the monsters are great, as are the story ideas. I just wanted to put this here in case there's anyone else that might have the same misconception that I did.
[4 of 5 Stars!]