| Title | Season | Episode # | First Aired |
|---|---|---|---|
| The Cat and the Canary | 4 | 66 | Saturday February 5, 2005 |
| The Ties That Bind | 4 | 67 | Saturday February 12, 2005 |
| The Doomsday Sanction | 4 | 68 | Saturday February 19, 2005 |
| Task Force X | 4 | 69 | Saturday May 21, 2005 |
| The Balance | 4 | 70 | Saturday May 28, 2005 |
| Double Date | 4 | 71 | Saturday June 4, 2005 |
| Clash | 4 | 72 | Saturday June 11, 2005 |
| Hunter's Moon | 4 | 73 | Saturday June 18, 2005 |
| Question Authority | 4 | 74 | Saturday June 25, 2005 |
| Flashpoint | 4 | 75 | Saturday July 2, 2005 |
| Panic in the Sky | 4 | 76 | Saturday July 9, 2005 |
| Divided We Fall | 4 | 77 | Saturday July 16, 2005 |
| Epilogue | 4 | 78 | Saturday July 23, 2005 |