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| Season 4 | (Add Episode) |
Episode # ![]() |
Airdate | Title | Rating | |
| 61 | 4x01 | 28/Sep/2007 | |
7.7 |
| 62 | 4x02 | 05/Oct/2007 | Lifeline (3) | 7.8 |
| 63 | 4x03 | 12/Oct/2007 | Reunion | 8.3 |
| 64 | 4x04 | 19/Oct/2007 | |
7.8 |
| 65 | 4x05 | 26/Oct/2007 | |
8.9 |
| 66 | 4x06 | 02/Nov/2007 | |
8.6 |
| 67 | 4x07 | 09/Nov/2007 | |
8.4 |
| 68 | 4x08 | 16/Nov/2007 | |
8.6 |
| 69 | 4x09 | 30/Nov/2007 | |
7.5 |
| 70 | 4x10 | 07/Dec/2007 | |
7.6 |
| 71 | 4x11 | 04/Jan/2008 | |
9 |
| 72 | 4x12 | 11/Jan/2008 | |
8.4 |
| 73 | 4x13 | 18/Jan/2008 | |
8.5 |
| 74 | 4x14 | 25/Jan/2008 | |
7.3 |
| 75 | 4x15 | 01/Feb/2008 | |
7.2 |
| 76 | 4x16 | 08/Feb/2008 | |
7.4 |
| 77 | 4x17 | 15/Feb/2008 | |
9.1 |
| 78 | 4x18 | 22/Feb/2008 | |
8.9 |
| 79 | 4x19 | 29/Feb/2008 | |
8.8 |
| 80 | 4x20 | 07/Mar/2008 | |
9.7 |
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