8.62 avg 6 episodes 8.2 → 9.0 42 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Drilling Down on Season 3 | 8.2 | 39 |
| 2 | Drilling Down on "Columbus Day" | 8.6 | 12 |
| 3 | Drilling Down on "Silence in the Dark" | 8.6 | 12 |
| 4 | Drilling Down on "Sword Play" | 8.7 | 12 |
| 5 | Drilling Down on "Voices from Below" | 8.6 | 12 |
| 6 | Drilling Down on "Secrets and Revelations" | 9.0 | 13 |
7.58 avg 6 episodes 7.8 → 8.0 42 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Nothing Will Stop Them | 7.8 | 14 |
| 2 | Putting the Pieces Together | 7.6 | 16 |
| 3 | The Truth Behind the Curse | 6.4 | 18 |
| 4 | The Pirates of Oak Island | 7.7 | 14 |
| 5 | The Secret Weapons | 8.0 | 13 |
| 6 | Legacy | 8.0 | 12 |
7.50 avg 5 episodes 7.7 → 7.8 42 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Finding Answers | 7.7 | 12 |
| 2 | The Great Feud | 8.0 | 12 |
| 3 | William Shatner Meets Oak Island | 7.0 | 18 |
| 4 | The Shakespeare Connection | 7.0 | 13 |
| 6 | Oak Island and the Founding Fathers | 7.8 | 13 |
7.17 avg 7 episodes 7.2 → 7.1 42 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Hold on to Your Seats | 7.2 | 11 |
| 2 | Gary Drayton's Top 10 Finds | 7.4 | 13 |
| 3 | Dave Blankenship's Oak Island | 7.6 | 11 |
| 4 | The Oak Island Connection | 7.3 | 11 |
| 5 | The Making Of | 6.0 | 10 |
| 6 | Theories Galore | 7.6 | 9 |
| 7 | The Best is Yet to Come | 7.1 | 10 |
