In the beginning, the boyfriend shows Calleigh a picture on his cell phone of Rebecca and Jake. However, when he is shown taking the picture, Rebecca has completely walked off screen - well out of the range of a camera.
When the criminal's shoe is seen next to the booksafe, his foot is approx. 12" away from the safe and in the close-up (directly after) his shoelace is caught in the booksafe.
When George brings the girls back to the bedroom it is daytime. The girls draw the sheer drapes, which still allow a considerable amount of natural light in the room. He leaves the room, and when he returns a few minutes later it is completely pitch black. He soon discovers the body of one of the girls, mistaking her blood, by its feel, as chocolate sauce. Later during the investigation they show a flash back to only moments after George discovers the body, and the room is once again filled with natural light streaming through the sheer windowpanes.
When examining the freight trailer, Boa Vista identifies an explosive substance as PETN (plastic explosive) and says the trailer could hold a large amount. Duquesne responds by saying "twice as much as used in the Oklahoma City Bombing." The bomb used in that attack was not plastic explosives, it was an ANFO (Ammonium Nitrate and Fuel Oil) bomb.