Just catching up through OnDemand…

The cliicking noise: The guy with Josh made the comment that both times he heard the clicking noise (which I thought sounded as much like a typewriter as the lightswitch), Josh was reading from the diary. So instead of Josh continuing to read aloud to check out that  theory, he decides to leave the room and look around outside. Disappointing.

SOS: agree with others, didn't hear it.

Movement in the window: finally thought  I saw something, but more than likely just a result from the movement of the camera while they were walking.

Nosfer, I think you pretty much nailed the coffee pot lid and the other item (the diary?).  I think most of us have knocked items off  a table/desk just by unknowingly brushing against them wearing a single coat or jacket thinking we had more room to pass. I can only imagine being bundled up for Antarctica.

Still, assuming for a moment there is something to all of this, they still  seem too uninterested to follow up and just head back home – like their shift is over.