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| Aflevering | Eerste uitzending |
|---|---|
| S04E01 - The Build is On | 03/09/2012 |
| S04E02 - Back in Time | 10/09/2012 |
| S04E03 - Common Ground | 17/09/2012 |
| S04E04 - Now or Never | 24/09/2012 |
| S04E05 - Uncharted Territory | 01/10/2012 |
| S04E06 - Junior's Surprise | 08/10/2012 |
| S04E07 - New Venture | 15/10/2012 |
| S04E08 - Full Circle | 22/10/2012 |
| S04E09 - A New Company | 29/10/2012 |
| S04E10 - Junior Frustration | 05/11/2012 |
| S04E11 - Old Wounds | 12/11/2012 |
| S04E12 - Troubled Waters | 19/11/2012 |
| S04E13 - Impasse | 26/11/2012 |
| S04E14 - The Last Build | 03/12/2012 |
| S04E15 - The End | 17/12/2012 |