Hush is lean, mean, and shockingly smart. In 81 minutes, it does what most slashers fail to do in two hours: makes you care about the victim, fear the villain, and hold your breath during the cat-and-mouse chase. Kate Siegel gives a physical performance for the ages—she acts with her eyes and her breath control.
You need constant dialogue or hate watching people make "obvious mistakes" (Maddie makes smart mistakes, not stupid ones).