Gen Bingo - Company of Strangers - MacGyver

I focussed on the opening scenes of The Invisible Killer for the prompt 'company of strangers' because in this we see somebody (or at least it implies) kill a Phoenix Foundation employee and then take their place on a recreational trip that MacGyver is orienteering into the wilderness as a form of stress relief. If you're unfamiliar with the episode the wall may not make sense.