I almost felt bad when a year later (real time, about 6 months game time) I revealed the boy as a rakshasa who was the BBEG.
Oh, bravo!
Henry, the scurrilous
truth rumors about me making a little girl cry at the gaming table are best forgotten. Ahem. And the succubus (actually, erinyes) story is in the first post of this thread from 2003:
http://www.enworld.org/forum/genera...ost-rat-bastard-thing-youve-ever-done-dm.html
To summarize:
Back in the days of 2e, before
dimensional lock:
The PCs badly offended an erinyes while in the outer planes. They left her alive, so she tracked down where they were from. While they still dallied in Sigil, she went to the PCs' home city, charmed and married the rogue's father, and then started tricking the local peasants into selling her their souls. By the time the adventurers returned home, it was a fait accompli.
The rogue was understandably upset that his father had remarried. But his new step-mother was so sweet to him... call me Mommy, and all that... even as she turned his room into a nursery for her unborn child and spent all of his inheritance.
When the PCs discovered the truth at a grand ball, she sneered at them. She explained that:
(a) she was too tough to kill all at once,
(b) she could teleport without error,
(c) consorting with fiends was a crime punishable by death and the crown seizing all assets, and
(d) she still had contract to a dozen or so innocent souls.
Thus, if they attacked her, she'd reveal herself in public to be a fiend (dooming the PC's father to death and disinheritance), then teleport away with the souls. Same thing if they even told anyone the truth. If they attacked her and DID somehow kill her, the souls she had claimed would be forever doomed. And while the PCs tried to digest this nasty little catch-22, she waved at them prettily, smiled, and swept away to dance with someone else.
It was a fun conundrum.