"After a promising opening--a genuine sense of tension and mystery--SOUND OF MY VOICE crumbles under the weight of a pretentious script, annoying leads (Christopher Denham, especially), and a plot structure which suggests nothing so much as a bad TV pilot; a shame, because there are moments in the directing and in Brit Marling's (nicely enigmatic) performance as the alleged time traveler that show what this could have been. Intended as the first part of a trilogy; the sequels may flesh it out." - 50