Ground Zero (1973, USA) C-72m. *½ D: James T. Flocker. Starring Ron Casteel, Melvin Belli, David Button. Totally forgettable actioner about some terrorists who place a nuclear bomb on top of the Golden Gate bridge, intending to free some fellow criminals and asking a large sum of money. Extremely cheap, unappealing thriller. Only novelty: Showdown is filmed on top of the bridge, James Bond only made it there in the 1980s (A VIEW TO A KILL).