Does anyone remember the name of a sci fi show where people from outer space had taken human form and lived among us. When they were killed they turned orange and then vanished.
I think they were killed with water or something random like that.
It was shown around the time of 'time tunnel' and Man From UNCLE etc.
Please please help as its driving me and my dad crazy as we used towatch it when it was reshown in the 80s on BBC 2 at 6pm.