The Invisible Man - Season 2 Episode 12 Shadow Bomb

Military scientists have been working on a new form of explosive mine containing a light sensitive cell (designed by Peter Brady), that will detonate when a shadow passes over it. During testing there is an accident and an officer is trapped in a pit next to the mine, unable to move. With only a few minutes before the edge of the pit casts a shadow over the sensor, they call the only man in the world who could get to the mine without casting a shadow...