Life Serial - S6-E5
Corrected entry: In 'Life Serial', when Warren is in the college corridor looking up at the camera there are loads of students around him, but when we see things on Jonathon and Andrew's monitors, the corridor around him is deserted.
Correction: While there are many students in the corridor he just left and one who walks past him into the main corridor as Warren rounds the corner, we never see anyone else in the side hallway with Warren. That is the reason he stopped in this particular hallway: so that he could test his microphone and the Three's tap into the school security cameras without being observed.
Phoenix