Stanton sticks a flat blade into the door lock, jiggles it a little and poof, the door is unlocked. Picking a lock requires two tools, one is a flat blade used to apply twisting pressure on the barrel while the pick moves the tumblers up and down until each one is positioned in its unlocked position. In this way each tumbler is released . It is NOT possible to pick a lock with a lone flat blade or a hairpin either as depicted in so many shows.
When the murder victim's body is revealed, her mouth clearly moves.