- Tom Welling (Clark Kent)
- Erica Durance (Lois Lane)
- Cassidy Freeman (Tess Mercer)
- Justin Hartley (Oliver Queen)
Smallville — S2E18
Episode: Visitor
Air Date: 2003-04-15
Runtime: 43 min
Overview
After a schoolmate claims to be an alien and proves it by using heat vision, Clark investigates and believes the boy is from Krypton. Meanwhile, Helen confronts Lex over the locked room in the mansion that holds his investigation of Clark's secrets.