Set in the year 2000 but through the eyes of how someone in the 1950/60's would have visioned it to be.
Focusing place - small part of a city
Army - General (in charge/idiot)
Soldier - (Hero)
Space station infected -> Space pods return to Earth -> People surround pod in curiosity to greet any surviving astronaughts. The infected Astronaughts attack as humans then become more creature like as the film develops. -> Army gets involved -> Conclusion.
Astronaughts are invisible. At the start of the film they have their space suits on but as the threat of humans attacking them becomes more evident they remove the suits and become fully invisible.
The cannibals transform into a more primal appearance and more animal like over time as they feast on more flesh. To detect the cannibals, the soldiers use heat seeking devices (or refraction anomally detectors) to see where they are.