i can't seem to find Tollo Underhill. I've taken the good path, and I've just discovered the location of ^ Spoiler Vendigroth in Tulla, but when i go into the Dernholm pits Spoiler ^ and get to the location where he is supposed to be (or at least, where he is if you take the evil option) there aint anyone there. So, do you have to choose to ^ Spoiler work with dark elves for him to appear, or what? Spoiler ^
It's like a matryoshka doll of spoilers. Yes, unfortunately you have to take the dark path I think - them telling you about his capture from what I remember is a meant to be a new development in the game when you join the bad side.