>> reporter: in a whirlwind trip across on, rudy giuliani was on a mission to dig up dirt on president trump's political rivals. prosecutors in safe house and making visits to kiev. one says he was with giuliani every step of the way. >> right now a process of mr. giuliani to protect his client, as he says. and to have the witnesses there to protect his client is the main thing because he is the attorney of the of president of the united states and his main goal it make his part of the story to protect his client. >> reporter: this man was promoted debunked theory. giuliani didn't meet any current officials or president zelensky