Season 4
Clark Kent will have plenty of reasons to remember his senior year! Lois Lane — smart, opinionated, and entirely annoying to Clark — arrives in Smallville to investigate the death of her cousin. Lana gets a new older boyfriend. Clark decides to go against his parents' wishes and joins the football team as a quarterback. And while Clark sets off on a quest to find three mysterious Kryptonian crystals, Lex steps further from the light into darkness.
Episodes
1 Crusade Sep 22, 2004 
2 Gone Sep 29, 2004 
3 Facade Oct 6, 2004 
4 Devoted Oct 13, 2004 
5 Run Oct 20, 2004 
6 Transference Oct 27, 2004 
7 Jinx Nov 3, 2004 
8 Spell Nov 10, 2004 
9 Bound Nov 17, 2004 
10 Scare Dec 1, 2004 
11 Unsafe Jan 26, 2005 
12 Pariah Feb 2, 2005 
13 Recruit Feb 9, 2005 
14 Krypto Feb 16, 2005 
15 Sacred Feb 23, 2005 
16 Lucy Mar 2, 2005 
17 Onyx Apr 13, 2005 
18 Spirit Apr 20, 2005 
19 Blank Apr 27, 2005 
20 Ageless May 4, 2005 
21 Forever May 11, 2005 
22 Commencement May 18, 2005