Random_Coffee: Today i was walking around in Baldur's Gate, when someone approached and told me that they had poisoned my party while they were sleeping, and that i need an antidote to fix it. i didn't believe him, so i just walked away and continued doing the main questline. Later, when i rested, a message appeared saying that someone in my party was vomiting and feeling sick. How can i find the person that told me about the poisoning again? And how can i aquire the antidote?

It is my first time playing through Baldur's Gate, and I am using the Enhanced Edition.