Roseanne exits from apartment 301, bleeding from a cut near her eye. As she approaches the elevator, she reaches up and touches the area, but the blood is not disturbed.
A semi-automatic pistol used to commit a murder supposedly does not leak ignition gases from the breech because of its recent manufacture. This is nonsense; the breech of a semi-automatic is designed to open during firing, and will always leak ignition gases.
Lt. Anderson incorrectly describes the slide of a semi-automatic pistol as the "barrel".