Benjamin watched the dark aura and the shadow around Sara and narrowed his eyes. Then the voice, a faint hiss, barely audible, but he heard it.
"Shut it," he growled. "Leave her alone." 

Then he turned to Sara and reached out to take her hand. "Listen, Sara. Society has rejected to believe in what can't be observed or measured objectively and tought that to their children, so in their eyes we are crazy for seeing and hearing things that aren't there. And that is a doctrine that is really, really hard to break free from. But, a person is tangible and so is the paperwork around them. Simon died, but Marc won't believe I saw his spirit. So we will just emphasize how strange it is he just left without saying goodbye and that others left suddenly as well. And that we just want some piece of mind about them. If he's kind enough he might check where they went and if he will notice they aren't where they are supposed to be he might get suspicious too and then we have an ally who can look things up. That's why we need to bring in Marc, even if he sees us as patients."