Season 4
Season four continues the incredible story of the 4400. Old adversaries become new allies, and family ties are strained to the breaking point in the battle over promicin. Can the 4400 lead mankind into a new world, or will the forces working against them spell the end for their kind?
Episodes
1 The Wrath of Graham Jun 17, 2007 
2 Fear Itself Jun 24, 2007 
3 Audrey Parker's Come and Gone Jul 1, 2007 
4 The Truth and Nothing But the Truth Jul 8, 2007 
5 Try The Pie Jul 15, 2007 
6 The Marked Jul 22, 2007 
7 Till We Have Built Jerusalem Jul 29, 2007 
8 No Exit Aug 5, 2007 
9 Daddy's Little Girl Aug 12, 2007 
10 One of Us Aug 19, 2007 
11 Ghost in the Machine Aug 26, 2007 
12 Tiny Machines Sep 9, 2007 
13 The Great Leap Forward Sep 16, 2007