Threshold: 1x4
1 - 1Episode 1 Sep. 16, 2005
1 - 2Episode 2 Sep. 16, 2005
1 - 3Episode 3 Sep. 23, 2005
1 - 4Episode 4 Sep. 30, 2005
1 - 5Episode 5 Oct. 07, 2005
1 - 6Episode 6 Oct. 14, 2005
1 - 7Episode 7 Oct. 21, 2005
1 - 8Episode 8 Nov. 04, 2005
1 - 9Episode 9 Nov. 22, 2005
1 - 10Episode 10 Jan. 11, 2006
1 - 11Episode 11 Jan. 18, 2006
1 - 12Episode 12 Jan. 25, 2006
1 - 13Episode 13 Feb. 01, 2006