Sezon 4
Bölümler
1 Authorized Personnel Only (1) 5 Oca 2005 
2 Authorized Personnel Only (2) 5 Oca 2005 
3 The Awful Truth 12 Oca 2005 
4 Ice 19 Oca 2005 
5 Welcome to Liberty Village 26 Oca 2005 
6 Nocturne 9 Şub 2005 
7 Détente 16 Şub 2005 
8 Echoes 23 Şub 2005 
9 A Man of His Word 2 Mar 2005 
10 The Index 9 Mar 2005 
11 The Road Home 16 Mar 2005 
12 The Orphan 23 Mar 2005 
13 Tuesday 30 Mar 2005 
14 Nightingale 6 Nis 2005 
15 Pandora 13 Nis 2005 
16 Another Mister Sloane 20 Nis 2005 
17 A Clean Conscience 27 Nis 2005 
18 Mirage 4 May 2005 
19 In Dreams... 11 May 2005 
20 The Descent 18 May 2005 
21 Search and Rescue 18 May 2005 
22 Before the Flood 25 May 2005