Pyrex was right about the bait and switch. If you look back when you first met Django, Tanis says Django is his cousin, his Father’s Brother’s son. When Django was talking about the wager, he was referring to his cousin, his Mother’s Sister’s son.
A comment on Paladins and evil campaigns.
“City of the Spider Queen” was originally designed to be played by a good party. Most of the NPCs are evil antagonists to the party.
Since in this case the PCs are themselves evil, I have added one or more good adventuring parties to the mix. After all, adventuring parties as a wandering monster encounter have been part of D&D since the 1st edition. Every evil campaign should have a Paladin as an antagonist.
As you can probably surmise by now, Endur and Django belong to a good adventuring party that is on a quest. This is actually the FR equivalent version of Endur and Django; the real Endur and Django are Greyhawk characters.
So it is perfectly ok if you slaughter, maim, or do other nasty things to Django and Endur, since I have no emotional investment in either of them.
By this point, you can surmise that Django has a higher modifier in Bluff than any of the PCs have in Sense Motive.
The PCs are between ECL 13 and 15. You have 2 ECL 15s, 1 ECL 14, and 7 ECL 13s. House Millithor has far more resources in many ways than the Dwarven Adventuring Party.
For Endur, I’ll tell you this: he was built on 25 characteristic point buy, 75k in items, and is between ECL 13 and 15. Unlike the Greyhawk version of Endur, the FR version does not have any prestige class levels (since I’m not using PRCs in this game).