Factual error: When the real Sandy follows the other Sandy after she leaves the hair salon, the other Sandy notices she's being followed and speeds up her car. When she does that, the camera focuses on the speedometer and it shows the date and time, which don't correspond to the time the appointment was supposed to be, 3pm. The time on the clock in the car shows 9:13am and the date is shown as Tue 23 Feb. Further research shows that the last time February 23rd was on a Tuesday was in 2010.
Dustin Bates
2nd Feb 2015