Lex Luthor's room of obsession was a locked room in the Luthor Mansion that contained many items related to Clark Kent, the Kents and Krypton.
Known Items
- 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.
- One of the adrenaline parasites from Rush in a glass jar.
- Lex's crashed Porsche.
- A study of the car crash that nearly killed Lex in Pilot.
- Clark's family tree on which he scribbled in Kryptonian in Rosetta.
- A piece of green kryptonite encased in a tube.
- Drawings from the Kawatche Caves.
- A Nicodemus flower.
Appearances
- Season Two: Visitor
- Season Three: Covenant
- Season Four: Devoted
- Smallville Comics, Smallville Issue 9: Lies
Quotes
- 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.
- Helen: There's a lot here about the Kents.
- Lex: Yeah. They're an interesting family. Don't you think?
- Season Two, Visitor
- 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.
- Clark: You've inherited his dishonesty.
- 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.
- Season Three, Covenant