8. "Of course they could be lying....but who else was there?" In response to In response to 7
that's the point.
Unless they are going to break down and admit why they did it, the situation has the cover of a deal going down.
That's why we've heard so many times of people saying they don't want to be in a closed office with a certain other person because it will just be him or her and that other person's word about what happened.
There are many situations where there's no getting around a lack of witnesses.