http://www.denverpost.com/television/ci_22534794/anthony-edwards-returns-zero-hour-conspiracy-thriller-abc
Its an interesting premise, but needed more energy to fly.
http://en.wikipedia.org/wiki/Zero_Hour_(2013_TV_series)#Reception
http://beta.abc.go.com/shows/zero-hour, http://www.tv.com/shows/zero-hour-2012
http://www.hollywoodreporter.com/live-feed/zero-hour-producers-say-abc-411019
http://unrealitytv.com/first-look-abcs-new-conspiracy-series-zero-hour
http://ca.ign.com/articles/2013/03/02/zero-hour-canceled-cancelled-by-abc
A TV series has to radiate enough energy to draw in people.
http://www.csmonitor.com/The-Culture/Culture-Cafe/2013/0304/Zero-Hour-canceled-after-only-three-episodes
It just couldn't take off, at least The_Event flew for one season.