When Olivia arrives at the apartment complex where a woman is being held hostage she hears a gunshot while standing outside the first apartment. Then the door opens and a semi-automatic handgun with an external hammer is shown being pointed at the woman's head, however the hammer is uncocked. Since the gun was just fired a few seconds earlier the hammer would be in the cocked position. Then when the camera cuts away and back the hammer is suddenly cocked.
When Olivia and Elliott are in the station house discussing who might have a grudge against Olivia, Olivia is wearing a purple shirt and black pants. Later, when she and Elliott go to the bank, when they visit the young male victim's father, and when Elliott gets the call about the possible suspects who might be tracking Olivia, Olivia is wearing a black shirt and brown pants. In the next scene, when she and Elliott are questioning the first suspect, she's back in the purple shirt and black pants again.
When Benson first discovers the body in the cardboard box, the body's arm is sticking out and nothing else is visible. Later, the body's head is sticking out of the box and its arms are down inside the box.
When Olivia goes to Stabler's house to confront him about the protective detail, she tells him that if you can't trust your partner it's time to get a new one and walks away. The shot cuts to Eliot on the steps but then Olivia appears again in the frame and her movements appear as though she is speaking to him again, though there is no audio.