Continuity mistake: There's a vase of yellow flowers to the right of the helium "Happy Birthday" balloon (and screen). When Ashley gets up to answer the door, she walks past the balloon and the vase of flowers should be visible but is not. (00:01:40 - 00:02:28)
Continuity mistake: Tyler was given a pat-down before going into Derek's room, and he did not have a cell phone in any of his pockets, yet he was able to produce a cell phone to show Derek a photo. (00:16:05 - 00:18:53)
Continuity mistake: When Derek (as Tyler) goes into the hallway and when he walks outside toward the SUV, no cell phone outline can be seen in his front pockets. Somehow, he has Tyler's phone (or a different phone) when he gets inside the SUV. (00:20:15 - 00:20:45)
