Season 1 (2001 2002) YTV (Canadian TV channel) March 5, 2005 and October 4, 2005[]
| Episodes in Canada | Episodes YTV (Canadian TV channel) | Title | Directed by | Written by | Original air date
Canada |
Prod.code | U.S. viewers
(millions) |
|---|---|---|---|---|---|---|---|
| 101 | 101 | "Pilot" | David Nutter | Alfred Gough & Miles Millar | March 5, 2005 | 101 | 8.35 |
| 102 | 102 | "Metamorphosis" | Michael Watkins
& Philip Sgriccia |
Alfred Gough & Miles Millar | March 6, 2005 | 102 | 7.34 |
| 103 | 103 | "Hothead" | Greg Beeman | Greg Walker | March 12, 2005 | 103 | 6.02 |
| 104 | 104 | "X-Ray" | James Frawley | Mark Verheiden | March 13, 2005 | 104 | 6.63 |
| 105 | 105 | "Cool" | James A. Contner | Michael Green | March 19, 2005 | 105 | 5.94 |
| 106 | 106 | "Hourglass" | Chris Long | Doris Egan | March 20, 2005 | 106 | 6.36 |
| 107 | 107 | "Craving" | Philip Sgriccia | Michael Green | March 26, 2005 | 107 | 7.39 |
| 108 | 108 | "Jitters" | Michael Watkins | Cherie Bennett & Jeff Gottesfeld | March 27, 2005 | 108 | 5.80 |
| 109 | 109 | "Rogue" | David Carson | Mark Verheiden | April 2, 2005 | 109 | 5.78 |
| 110 | 110 | "Shimmer" | D. J. Caruso | Mark Verheiden & Michael Green | April 3, 2005 | 110 | 7.02 |
| 111 | 111 | "Hug" | Chris Long | Doris Egan | April 9, 2005 | 111 | 6.38 |
| 112 | 112 | "Leech" | Greg Beeman | Timothy Schlattmann | April 16, 2005 | 112 | 6.07 |
| 113 | 113 | "Kinetic" | Robert Singer | Philip Levens | April 17, 2005 | 113 | 6.20 |
| 114 | 114 | "Zero" | Michael Katleman | Story by : Alfred Gough & Miles Millar
Teleplay by : Mark Verheiden |
April 23, 2005 | 114 | 6.90 |
| 115 | 115 | "Nicodemus" | James Marshall | Story by : Greg Walker
Teleplay by : Michael Green |
April 24, 2005 | 115 | 6.74 |
| 116 | 116 | "Stray" | Paul Shapiro | Philip Levens | April 30, 2005 | 116 | 6.03 |
| 117 | 117 | "Reaper" | Terrence O'Hara | Cameron Litvack | May 1, 2005 | 117 | 5.48 |
| 157 | 157 | "Drone" | Michael Katleman | Michael Green & Philip Levens | October 4, 2005 | 157 | 5.68 |
| 118 | 118 | "Crush" | James Marshall | Philip Levens & Alfred Gough & Miles Millar | May 7, 2005 | 118 | 6.42 |
| 119 | 119 | "Obscura" | Terrence O'Hara | Story by : : Greg Walker
Teleplay by : Mark Verheiden & Michael Green |
May 8, 2005 | 119 | 6.10 |
| 120 | 120 | "Tempest" | Greg Beeman | Story by : Philip Levens
Teleplay by : Alfred Gough & Miles Millar |
May 14, 2005 | 120 | 5.96 |
Season 2 (2002 2003) YTV (Canadian TV channel) May 15, 2005 and August 6, 2005[]
| Episodes in Canada | Episodes YTV (Canadian TV channel) | Title | Directed by | Written by | Original air date
Canada |
Prod.code | U.S. viewers
(millions) |
|---|---|---|---|---|---|---|---|
| 121 | 121 | "Vortex" | Greg Beeman | Story by : Alfred Gough & Miles Millar
Teleplay by : Philip Levens |
May 15, 2005 | 121 | 8.66 |
| 122 | 122 | "Heat" | James Marshall | Mark Verheiden | May 21, 2005 | 122 | 8.07 |
| 123 | 123 | "Duplicity" | Steve Miner | Todd Slavkin & Darren Swimmer | May 28, 2005 | 123 | 8.82 |
| 124 | 124 | "Red" | Jeff Woolnough | Jeph Loeb | May 29, 2005 | 124 | 8.89 |
| 125 | 125 | "Nocturne" | Rick Wallace | Brian Peterson & Kelly Souders | June 4, 2005 | 125 | 8.3 |
| 126 | 126 | "Redux" | Chris Long | Russel Friend & Garrett Lerner | June 5, 2005 | 126 | 8.22 |
| 127 | 127 | "Lineage" | Greg Beeman | Story by : Alfred Gough & Miles Millar
Teleplay by : Kenneth Biller |
June 11, 2005 | 127 | 9.38 |
| 128 | 128 | "Ryan" | Terrence O'Hara | Philip Levens | June 12, 2005 | 128 | 7.35 |
| 129 | 129 | "Dichotic" | Craig Zisk | Mark Verheiden | June 18, 2005 | 129 | 8.3 |
| 130 | 130 | "Skinwalker" | Marita Grabiak | Story by : Mark Warshaw
Teleplay by : Brian Peterson & Kelly Souders |
June 19, 2005 | 130 | 8.6 |
| 131 | 131 | "Visage" | William Gereghty | Todd Slavkin & Darren Swimmer | June 25, 2005 | 131 | 7.27 |
| 132 | 132 | "Insurgence" | James Marshall | Kenneth Biller & Jeph Loeb | June 26, 2005 | 132 | 6.6 |
| 133 | 133 | "Suspect" | Kenneth Biller | Mark Verheiden & Philip Levens | July 2, 2005 | 133 | 7.46 |
| 134 | 134 | "Rush" | Rick Rosenthal | Todd Slavkin & Darren Swimmer | July 3, 2005 | 134 | 8.1 |
| 135 | 135 | "Prodigal" | Greg Beeman | Brian Peterson & Kelly Souders | July 9, 2005 | 135 | 7.43 |
| 136 | 136 | "Fever" | Bill Gereghty | Matthew Okumura | July 10, 2005 | 136 | 7.9 |
| 137 | 137 | "Rosetta" | James Marshall | Alfred Gough & Miles Millar | July 16, 2005 | 137 | 8.7 |
| 138 | 138 | "Visitor" | Rick Rosenthal | Philip Levens | July 17, 2005 | 138 | 5.91 |
| 139 | 139 | "Precipice" | Thomas J. Wright | Clint Carpenter | July 23, 2005 | 139 | 6.70 |
| 140 | 140 | "Witness" | Rick Wallace | Mark Verheiden | July 24, 2005 | 140 | 6.50 |
| 141 | 141 | "Accelerate" | James Marshall | Story by : Todd Slavkin & Darren Swimmer
Teleplay by : Brian Peterson & Kelly Souders |
July 30, 2005 | 141 | 7.03 |
| 142 | 142 | "Calling" | Terrence O'Hara | Kenneth Biller | July 31, 2005 | 142 | 7.1 |
| 143 | 143 | "Exodus" | Greg Beeman | Alfred Gough & Miles Millar | August 6, 2005 | 143 | 7.5 |
Season 3 (2003 2004) YTV (Canadian TV channel) August 7, 2005 and December 10, 2005[]
| Episodes in Canada | Episodes YTV (Canadian TV channel) | Title | Directed by | Written by | Original air date
Canada |
Prod.code | U.S. viewers
(millions) |
|---|---|---|---|---|---|---|---|
| 144 | 144 | "Exile" | Greg Beeman | Alfred Gough & Miles Millar | August 7, 2005 | 144 | 6.82 |
| 145 | 145 | "Phoenix" | James Marshall | Kelly Souders & Brian Peterson | August 13, 2005 | 145 | 6.74 |
| 146 | 146 | "Extinction" | Michael Katleman | Todd Slavkin & Darren Swimmer | August 14, 2005 | 146 | 6.47 |
| 147 | 147 | "Slumber" | Terrence O'Hara | Drew Z. Greenberg | August 20, 2005 | 147 | 6.92 |
| 148 | 148 | "Perry" | Jeannot Szwarc | Mark Verheiden | August 21, 2005 | 148 | 6.70 |
| 149 | 149 | "Relic" | Marita Grabiak | Kelly Souders & Brian Peterson | August 27, 2005 | 149 | 6.72 |
| 150 | 150 | "Magnetic" | David Jackson | Holly Harold | August 28, 2005 | 150 | 6.87 |
| 151 | 151 | "Shattered" | Ken Biller | Ken Biller | September 3, 2005 | 151 | 6.36 |
| 152 | 152 | "Asylum" | Greg Beeman | Todd Slavkin & Darren Swimmer | September 4, 2005 | 152 | 5.61 |
| 153 | 153 | "Whisper" | Tom Wright | Ken Horton | September 10, 2005 | 153 | 5.09 |
| 154 | 154 | "Delete" | Pat Williams | Kelly Souders & Brian Peterson | September 17, 2005 | 154 | 5.50 |
| 155 | 155 | "Hereafter" | Greg Beeman & James Marshall | Mark Verheiden & Drew Greenberg | September 24, 2005 | 155 | 5.31 |
| 156 | 156 | "Velocity" | Jeannot Szwarc | Todd Slavkin & Darren Swimmer | October 1, 2005 | 156 | 5.01 |
| 158 | 158 | "Obsession" | James Marshall | Holly Harold | October 8, 2005 | 158 | 5.33 |
| 159 | 159 | "Resurrection" | Terrence O'Hara | Todd Slavkin & Darren Swimmer | October 15, 2005 | 159 | 4.97 |
| 160 | 160 | "Crisis" | Ken Biller | Kelly Souders & Brian Peterson | October 22, 2005 | 160 | 5.26 |
| 161 | 161 | "Legacy" | Greg Beeman | Jeph Loeb | November 5, 2005 | 161 | 4.48 |
| 162 | 162 | "Truth" | James Marshall | Drew Greenberg | November 12, 2005 | 162 | 4.43 |
| 163 | 163 | "Memoria" | Miles Millar | Alfred Gough & Miles Millar | November 19, 2005 | 163 | 4.32 |
| 164 | 164 | "Talisman" | John Schneider | Ken Biller | November 26, 2005 | 164 | 4.72 |
| 165 | 165 | "Forsaken" | Terrence O'Hara | Kelly Souders & Brian Peterson | December 3, 2005 | 165 | 4.54 |
| 166 | 166 | "Covenant" | Greg Beeman | Story by : Todd Slavkin & Darren Swimmer
Teleplay by : Alfred Gough & Miles Millar |
December 10, 2005 | 166 | 5.92 |
Season 4 (2004 2005) YTV (Canadian TV channel) January 7, 2006 and May 30, 2006[]
| Episodes in Canada | Episodes YTV (Canadian TV channel) | Title | Directed by | Written by | Original air date
Canada |
Prod.code | U.S. viewers
(millions) |
|---|---|---|---|---|---|---|---|
| 167 | 167 | "Crusade" | Greg Beeman | Alfred Gough & Miles Millar | January 7, 2006 | 167 | 6.07 |
| 168 | 168 | "Gone" | James Marshall | Kelly Souders & Brian Peterson | January 14, 2006 | 168 | 5.66 |
| 169 | 169 | "Façade" | Pat Williams | Holly Harold | January 21, 2006 | 169 | 5.45 |
| 170 | 170 | "Devoted" | David Carson | Luke Schelhaas | January 28, 2006 | 170 | 6.20 |
| 171 | 171 | "Run" | David Barrett | Steven S. DeKnight | February 4, 2006 | 171 | 5.41 |
| 172 | 172 | "Transference" | James Marshall | Todd Slavkin & Darren Swimmer | February 11, 2006 | 172 | 5.69 |
| 173 | 173 | "Jinx" | Paul Shapiro | Mark Warshaw | February 18, 2006 | 173 | 5.02 |
| 174 | 174 | "Spell" | Jeannot Szwarc | Steven S. DeKnight | February 25, 2006 | 174 | 5.51 |
| 175 | 175 | "Bound" | Terrence O'Hara | Luke Schelhaas | March 4, 2006 | 175 | 5.06 |
| 176 | 176 | "Scare" | David Carson | Kelly Souders & Brian Peterson | March 11, 2006 | 176 | 4.89 |
| 177 | 177 | "Unsafe" | Greg Beeman | Steven S. DeKnight & Jeph Loeb | March 18, 2006 | 177 | 4.21 |
| 178 | 178 | "Pariah" | Paul Shapiro | Holly Harold | March 25, 2006 | 178 | 4.78 |
| 179 | 179 | "Recruit" | Jeannot Szwarc | Todd Slavkin & Darren Swimmer | April 1, 2006 | 179 | 4.91 |
| 180 | 180 | "Krypto" | James Marshall | Luke Schelhaas | April 8, 2006 | 180 | 5.08 |
| 181 | 181 | "Sacred" | Brad Turner | Kelly Souders & Brian Peterson | April 15, 2006 | 181 | 5.26 |
| 182 | 182 | "Lucy" | David Barrett | Story by : Neil Sadhu
Teleplay by : Neil Sadhu & Daniel Sulzberg |
April 22, 2006 | 182 | 4.51 |
| 183 | 183 | "Onyx" | Terrence O'Hara | Steven S. DeKnight | April 29, 2006 | 183 | 3.85 |
| 184 | 184 | "Spirit" | Whitney Ransick | Luke Schelhaas | May 6, 2006 | 184 | 4.39 |
| 185 | 185 | "Blank" | Jeannot Szwarc | Kelly Souders & Brian Peterson | May 13, 2006 | 185 | 4.59 |
| 186 | 186 | "Ageless" | Steven S. DeKnight | Steven S. DeKnight | May 20, 2006 | 186 | 4.51 |
| 187 | 187 | "Forever" | James Marshall | Brian Peterson & Kelly Souders | May 27, 2006 | 187 | 3.96 |
| 188 | 188 | "Commencement" | Greg Beeman | Todd Slavkin & Darren Swimmer | May 30, 2006 | 188 | 5.47 |