7.31 avg 10 episodes 7.5 → 7.7 51 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | The Adventure of the Clapham Cook | 7.5 | 3,013 |
| 2 | Murder in the Mews | 7.4 | 2,568 |
| 3 | The Adventure of Johnnie Waverly | 6.9 | 2,383 |
| 4 | Four and Twenty Blackbirds | 7.2 | 2,278 |
| 5 | The Third Floor Flat | 7.6 | 2,382 |
| 6 | Triangle at Rhodes | 7.4 | 2,438 |
| 7 | Problem at Sea | 7.3 | 2,222 |
| 8 | The Incredible Theft | 7.1 | 2,060 |
| 9 | The King of Clubs | 7.0 | 2,073 |
| 10 | The Dream | 7.7 | 2,173 |
7.51 avg 9 episodes 8.1 → 7.2 56 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Peril at End House | 8.1 | 2,793 |
| 2 | The Veiled Lady | 7.4 | 2,042 |
| 3 | The Lost Mine | 7.3 | 1,911 |
| 4 | The Cornish Mystery | 7.5 | 1,961 |
| 5 | The Disappearance of Mr. Davenheim | 7.8 | 2,041 |
| 6 | Double Sin | 7.5 | 1,908 |
| 7 | The Adventure of the Cheap Flat | 7.4 | 1,843 |
| 8 | The Kidnapped Prime Minister | 7.4 | 1,814 |
| 9 | The Adventure of the Western Star | 7.2 | 1,733 |
7.56 avg 11 episodes 7.9 → 7.5 55 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | The Mysterious Affair at Styles | 7.9 | 2,766 |
| 2 | How Does Your Garden Grow? | 7.6 | 1,862 |
| 3 | The Million Dollar Bond Robbery | 7.6 | 1,772 |
| 4 | The Plymouth Express | 7.4 | 1,746 |
| 5 | Wasps' Nest | 7.7 | 1,855 |
| 6 | The Tragedy at Marsdon Manor | 7.6 | 1,805 |
| 7 | The Double Clue | 7.3 | 1,781 |
| 8 | The Mystery of the Spanish Chest | 7.6 | 1,766 |
| 9 | The Theft of the Royal Ruby | 7.5 | 1,751 |
| 10 | The Affair at the Victory Ball | 7.5 | 1,716 |
| 11 | The Mystery of Hunter's Lodge | 7.5 | 1,685 |
8.00 avg 3 episodes 8.5 → 7.7 103 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | The ABC Murders | 8.5 | 3,307 |
| 2 | Death in the Clouds | 7.8 | 2,462 |
| 3 | One, Two, Buckle My Shoe | 7.7 | 2,262 |
7.63 avg 8 episodes 7.5 → 7.5 50 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | The Adventure of the Egyptian Tomb | 7.5 | 1,835 |
| 2 | The Underdog | 7.3 | 1,629 |
| 3 | The Yellow Iris | 7.8 | 1,851 |
| 4 | The Case of the Missing Will | 7.6 | 1,700 |
| 5 | The Adventure of the Italian Nobleman | 7.4 | 1,618 |
| 6 | The Chocolate Box | 8.2 | 2,099 |
| 7 | Dead Man's Mirror | 7.7 | 1,681 |
| 8 | Jewel Robbery at the Grand Metropolitan | 7.5 | 1,637 |
7.90 avg 4 episodes 8.1 → 8.0 100 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Hercule Poirot's Christmas | 8.1 | 3,061 |
| 2 | Hickory Dickory Dock | 7.7 | 2,450 |
| 3 | Murder on the Links | 7.8 | 2,492 |
| 4 | Dumb Witness | 8.0 | 2,487 |
8.05 avg 4 episodes 8.4 → 7.7 94 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Five Little Pigs | 8.4 | 4,685 |
| 2 | Sad Cypress | 8.1 | 3,050 |
| 3 | Death on the Nile | 8.0 | 4,713 |
| 4 | The Hollow | 7.7 | 2,956 |
7.63 avg 4 episodes 7.5 → 7.4 93 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | The Mystery of the Blue Train | 7.5 | 3,036 |
| 2 | Cards on the Table | 7.6 | 2,811 |
| 3 | After the Funeral | 8.0 | 2,954 |
| 4 | Taken at the Flood | 7.4 | 2,365 |
7.73 avg 4 episodes 7.7 → 7.5 87 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Mrs McGinty's Dead | 7.7 | 2,409 |
| 2 | Cat Among the Pigeons | 7.9 | 2,592 |
| 3 | Third Girl | 7.8 | 2,409 |
| 4 | Appointment with Death | 7.5 | 2,899 |
7.85 avg 4 episodes 7.7 → 7.9 90 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Three Act Tragedy | 7.7 | 2,570 |
| 2 | Hallowe'en Party | 7.8 | 2,657 |
| 3 | Murder on the Orient Express | 8.0 | 5,568 |
| 4 | The Clocks | 7.9 | 2,561 |
7.96 avg 5 episodes 8.0 → 8.6 89 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Elephants Can Remember | 8.0 | 2,595 |
| 2 | The Big Four | 7.2 | 2,340 |
| 3 | Dead Man's Folly | 7.9 | 2,332 |
| 4 | The Labours of Hercules | 8.1 | 2,588 |
| 5 | Curtain: Poirot's Last Case | 8.6 | 2,892 |
