The exploits a team of people whose job is to investigate the unusual, the strange and the extraterrestrial.
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | Everything Changes | 2006-10-22 | 50 min |
| Season 1 | Episode 2 | Day One | 2006-10-22 | 50 min |
| Season 1 | Episode 3 | Ghost Machine | 2006-10-29 | 50 min |
| Season 1 | Episode 4 | Cyberwoman | 2006-11-05 | 50 min |
| Season 1 | Episode 5 | Small Worlds | 2006-11-12 | 45 min |
| Season 1 | Episode 6 | Countrycide | 2006-11-19 | 50 min |
| Season 1 | Episode 7 | Greeks Bearing Gifts | 2006-11-26 | 50 min |
| Season 1 | Episode 8 | They Keep Killing Suzie | 2006-12-03 | 55 min |
| Season 1 | Episode 9 | Random Shoes | 2006-12-10 | 50 min |
| Season 1 | Episode 10 | Out of Time | 2006-12-17 | 50 min |
| Season 1 | Episode 11 | Combat | 2006-12-24 | 50 min |
| Season 1 | Episode 12 | Captain Jack Harkness | 2007-01-01 | 50 min |
| Season 1 | Episode 13 | End of Days | 2007-01-05 | 50 min |
| Season 2 | Episode 1 | Kiss Kiss, Bang Bang | 2008-01-16 | 50 min |
| Season 2 | Episode 2 | Sleeper | 2008-01-23 | 50 min |
| Season 2 | Episode 3 | To the Last Man | 2008-01-30 | 50 min |
| Season 2 | Episode 4 | Meat | 2008-02-06 | 50 min |
| Season 2 | Episode 5 | Adam | 2008-02-13 | 50 min |
| Season 2 | Episode 6 | Reset | 2008-02-13 | 45 min |
| Season 2 | Episode 7 | Dead Man Walking | 2008-02-20 | 50 min |
| Season 2 | Episode 8 | A Day in the Death | 2008-02-27 | 50 min |
| Season 2 | Episode 9 | Something Borrowed | 2008-03-05 | 45 min |
| Season 2 | Episode 10 | From Out of the Rain | 2008-03-12 | 45 min |
| Season 2 | Episode 11 | Adrift | 2008-03-19 | 50 min |
| Season 2 | Episode 12 | Fragments | 2008-03-21 | 50 min |
| Season 2 | Episode 13 | Exit Wounds | 2008-04-04 | 50 min |
| Season 3 | Episode 1 | Day One | 2009-07-06 | 60 min |
| Season 3 | Episode 2 | Day Two | 2009-07-07 | 60 min |
| Season 3 | Episode 3 | Day Three | 2009-07-08 | 60 min |
| Season 3 | Episode 4 | Day Four | 2009-07-09 | 60 min |
| Season 3 | Episode 5 | Day Five | 2009-07-10 | 60 min |
| Season 4 | Episode 1 | The New World | 2011-07-08 | 60 min |
| Season 4 | Episode 2 | Rendition | 2011-07-15 | 60 min |
| Season 4 | Episode 3 | Dead of Night | 2011-07-22 | 60 min |
| Season 4 | Episode 4 | Escape to L.A. | 2011-07-29 | 60 min |
| Season 4 | Episode 5 | The Categories of Life | 2011-08-05 | 60 min |
| Season 4 | Episode 6 | The Middle Men | 2011-08-12 | 60 min |
| Season 4 | Episode 7 | Immortal Sins | 2011-08-19 | 60 min |
| Season 4 | Episode 8 | End of the Road | 2011-08-26 | 60 min |
| Season 4 | Episode 9 | The Gathering | 2011-09-02 | 60 min |
| Season 4 | Episode 10 | The Blood Line | 2011-09-09 | 60 min |
| Production | Jane Tranter | Executive Producer |
| Production | Julie Gardner | Executive Producer |
| Production | Russell T Davies | Executive Producer |
