It all started for an unlucky Architect, David Vincent who was looking for a shortcut that he never found. On that fateful night, he saw something that would change his World forever.....and maybe ours too. The aliens are here and they have these physical differences: No Pulse - Don't Bleed - No Heart Beat - Some Have No Emotion - Pure Oxygen Kills Them - Strange Xray When Taken - Some Have a Deformed Small Finger. Repeated in the UK in the late 70s or early 80s.