1) Serrick's Tower - I see it on the map. How do you get to it? It's seems inaccessible.
Go here and look at
http://beyond.divinedivinity.net/ and look at map (Act III - Crystal Forest (south)) #12
2) Missing Monks - Where?!
Go here and look at
http://beyond.divinedivinity.net/ and look at map Act III - Crystal Forest (north) #13
3) Cassandra - She is now cursed and won't talk any further. Cannot give her the book she wanted. Also, am I supposed to kill her for another quest? How?!
Isn't the book for Cila(sp) the other witch?
4) Crystal shards for cursed man?
Talk to the black imp then go to
http://beyond.divinedivinity.net/ and look at map Act III - Crystal Forest (north) # 24 and talk to Raven.