A study of what happens to a bullet when it impacts a solid object, several flattened bullets hanging from strings, presumably from Red when Clark shot himself in the palm several times and left the bullets on the floor of the mansion.
An image of the octagonal key which was briefly in Lex's possession in Obscura.
Helen: (looking around the room) What is all this?
Lex: Montaigne said obsession was the wellspring of genius and madness. This is my obsession. I'm sure you can understand my reluctance to show you this room. I thought you might decide I was a little... eccentric.
Lex: There's so much of my own life I can't explain. I've survived countless brushes with death, and it all started with this car crash. If I'm guilty of anything, it's that I've inherited my father's eccentric curiosity for the unexplained.
Lex: Clark, look me in the eye and tell me you don't have any hidden places of your own where you keep your deep, dark secrets.
Clark: Ever since I've met you, I've been defending you, making excuses for you to people like Pete, like my parents. Telling them, "You can trust Lex Luthor. He's a good guy. He's nothing like his father." I was wrong.