In the scene after the REAL Riches family die in the car accident, Dahlia wasn't wearing a bracelet, and then in the next scene she has her hand up by her face and a bracelet.
In the scene where the "original" Doug Rich is talking to Wayne, he has a silver cell phone, but later in the episode the phone is a different color
The new house has windows in the front doors, while after the first episode they are solid with no windows in them.
When the father put the name tag on at the very beginning of the episode and walks around, the position of the name badge keeps changing from being strait back to being slanted and back again. This continues on for some time.
When the BMW is being pushed into the water, a ramp can be seen behind the right rear wheel.