I'm guessing that you're not revealing the speaker while in the Cinematic mode. It's simple to fix, just add another action "Visibility - Disable Fog of War" after you enable cinematic mode. Maybe it's "Visibility - Disable Black Mask", I really don't know. Anyway, don't forget to Enable whatever you Disabled at the end of the trigger.
If that's not what you mean by "can't see the human", try to be more specific with your wording.
Cheers