During the interrogation of the first suspect with Stabler and Benson, chairs are pushed around. A view into the interrogation room through the window while Capt Cragen is talking to Stabler and Benson shows that the chair on the left side is leaning against the table and the chair on the right is beside the suspect. When Tutuola takes over the interrogation, the chairs are clearly opposite; the right chair is now leaning against the table and the left chair is beside the suspect.
When Samantha's body is discovered on the laundry belt, her feet are at the level of the workers' eyes. When the detectives get there, the body is much lower on the belt and now her head is at the level of the detective's eyes.