Continuity: A few times when Emily fights with the intruder, her hair changes from being in a ponytail, to down.

Continuity: Emily's hair scrunchie appears in her hair as she is answering the phone and seems to have fallen out during the struggle but reappears and disappears several times throughout the attack.

Continuity: When Emily talks to Raquel at the bar Emily's eyes are blue. But in the rest of the film her eyes are brown.

Revealing: At the end a character is killed and you see him lying on the floor, dead, but still breathing....