| Director | Freddie Francis, Ken Wiederhorn |
|---|---|
| Genre | horror film |
| Runtime | 91 min |
| Country | Canada, United States |
After a window washer plunges to his death from a high-rise, several people come to investigate, including security consultant Dennis Randall. He cannot locate a problem, but decides to investigate further when more gruesome deaths take place inside and around the office building. His investigations appear to show a sinister force behind all the deaths, a supernatural entity.