[Flaming Fist Enforcer]

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Angelo will let ya go if you have Shar-Teel with ya.

As for Poison quest when Diviner directs you to the Temple of Umberlee. Go there and ask to see the High Priestess (you'll have to bribe them). Talk to her and ask for help to remove the Geas and she'll ask for you to get a Book from the Temple of Tymora (w section). When you have it go back to the Temple of Umberlee and give the Priestess the book.

Bringing her a body is the other quest you get in w part of the city.