The mastermind only allowed himself to be shocked for a few seconds before saying, "How do you know if I'm lying or not? What if I'm not lying and there really is an antidote? Would you be able to live with yourself if you knew that there was one and you didn't do anything to help?"
There was a hint of panic in his voice when he said this, but he knew that this was the only way for him.
The only thing that he could do was ask these misleading questions to try and create a bit of doubt in Lin Fan. As long as there was doubt, he would hesitate to kill him since there was still the possibility that he would have the antidote.
But Lin Fan didn't fall for this at all.
He just calmly looked at him and said, "You have already shown your killing intent, there's no need to hide it anymore."