Review: The Call

911 operators. Are they the true heroes of the emergency services, relying on calm heads and extensive training to ensure that life-threatening situations are resolved efficiently? Or are they the world's greatest buck-passers? Either way, they are on the frontline of America's everyday war against danger and it was only a matter of time before we saw a film focusing on them rather than those out in the field. The problem is: how do you make a movie where the hero is one hang-up away from being utterly useless?