Season 4, Episode 5: Run               20 October 2004
Season 4, Episode 6: Transference      27 October 2004
Season 4, Episode 7: Jinx              3 November 2004
Season 4, Episode 8: Spell            10 November 2004
Season 4, Episode 9: Bound            17 November 2004
Season 4, Episode 10: Scare            1 December 2004
Season 4, Episode 11: Unsafe           26 January 2005
Season 4, Episode 12: Pariah           2 February 2005
Season 4, Episode 13: Recruit          9 February 2005
Season 4, Episode 14: Krypto          16 February 2005
Season 4, Episode 15: Sacred          23 February 2005
Season 4, Episode 16: Lucy                2 March 2005
Season 4, Episode 17: Onyx               13 April 2005
Season 4, Episode 18: Spirit             20 April 2005
Season 4, Episode 19: Blank              27 April 2005
Season 4, Episode 20: Ageless               4 May 2005
Season 4, Episode 21: Forever              11 May 2005
Season 4, Episode 22: Commencement         18 May 2005