When Tabitha arrives home one of the first things she does is take off her boots. However after she goes to get a beer from the kitchen the sound of her heels as she walks away from the fridge is heard.
When Tabitha is murdered, the killer shoots her at point-blank range in the back of the head. Blood splatter goes all over the window she was facing. If her blood splattered out, that means the bullet went completely through her head. Yet the window was undamaged; the bullet would've exited and broken the window.
When talking about the perfume, Spencer claims it was the perfume Mary Magdalene used to wash Jesus' feet. But it was actually Mary of Bethany (Lazarus and Martha's sister) who used the perfume to wash Jesus' feet and dried them with her hair.