Smallville - Season 2 Episode 18 -

When the weird and lonely teenager with healing power Cyrus Krupp claims to be an alien, Clark approaches to him trying to know his origins to determine if Cyrus is a Kryptonian alien, or if he's just a crazy meteor-rock mutant who thinks he's an alien. Meanwhile, Dr. Helen Bryce moves to Lex's mansion, but she realizes that her skeleton key opens all but one room. Lex eventually shows her the inside of the room to reveal his study work about the meteor shower, and about Clark Kent. Also, Lana asks Clark to help her look after her sick prized horse which Cyrus heals ...