People can and will make things up. They will make up excuses, and accuse the innocent of things. They will threaten. Whenever possible, they will appeal to the authorities -- and whenever possible, tie you up in bureaucratic defences, or remove you somewhere secure, private, where you cannot influence others.
But perhaps you are there to be able to influence Caesar.
10 And when the governor had nodded to him to speak, Paul replied:
“Knowing that for many years you have been a judge over this nation, I cheerfully make my defence. 11 You can verify that it is not more than twelve days since I went up to worship in Jerusalem, 12 and they did not find me disputing with anyone or stirring up a crowd, either in the temple or in the synagogues or in the city. 13 Neither can they prove to you what they now bring up against me. 14 But this I confess to you, that according to the Way, which they call a sect, I worship the God of our fathers, believing everything laid down by the Law and written in the Prophets, 15 having a hope in God, which these men themselves accept, that there will be a resurrection of both the just and the unjust. 16 So I always take pains to have a clear conscience towards both God and man. 17 Now after several years I came to bring alms to my nation and to present offerings. 18 While I was doing this, they found me purified in the temple, without any crowd or tumult. But some Jews from Asia— 19 they ought to be here before you and to make an accusation, should they have anything against me. 20 Or else let these men themselves say what wrongdoing they found when I stood before the council, 21 other than this one thing that I cried out while standing among them: ‘It is with respect to the resurrection of the dead that I am on trial before you this day.’”
22 But Felix, having a rather accurate knowledge of the Way, put them off, saying, “When Lysias the tribune comes down, I will decide your case.” 23 Then he gave orders to the centurion that he should be kept in custody but have some liberty, and that none of his friends should be prevented from attending to his needs.