Sweep down a queue
A wide shot where a travelling bar makes each figure see-through in turn. a wide shot of four people standing in a line in a dark hall, a bright vertical bar of light travelling steadily across the frame from left to right, each figure turning see-through with a pale glowing interior only while the bar is on them and returning to solid once it passes, the ones ahead of the bar still solid so the order of the reveal is clear, locked camera

