Kalista

A trapped girl in a cave (requires Dynamite) south-west of the Rotting Croplands. On the way there, you meet some really nice and friendly people who only wishes you well.

If you keep questioning her, she gets angry, transforms into a Chthonic creature named Ballog'Nath, the Hellfire.

If you believe her story, you send her out with a Riftgate, and she murders all those nice and friendly people you just met. Their blood is on your hands.