| Episode cast overview, first billed only: | |||
| Matthew Macfadyen | ... | Det. Insp. Edmund Reid | |
| Jerome Flynn | ... | Det. Sgt. Bennet Drake | |
| Adam Rothenberg | ... | Captain Homer Jackson | |
| MyAnna Buring | ... | Long Susan | |
| Charlene McKenna | ... | Rose Erskine | |
| Joseph Mawle | ... | Det. Insp. Jedediah Shine | |
| Killian Scott | ... | Augustus Dove | |
| Jonas Armstrong | ... | Nathaniel | |
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Benjamin O'Mahony | ... | Det. Sgt. Frank Thatcher |
| Anna Burnett | ... | Mathilda Reid | |
| Matthew Lewis | ... | Sgt. Drum Drummond | |
| Lydia Wilson | ... | Mimi Morton | |
| Ian Pirie | ... | Jenkins | |
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Ellie Haddington | ... | Agatha Chudleigh |
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Kahl Murphy | ... | Connor Judge |
With half the police force in London at Drake's funeral Jackson and Susan suggest to the falsely accused Reid that they flee the country but he is determined to expose Dove and his brother Nathaniel as Drake's killers. Hiding out with Drake's old flame Mimi Morton they learn that Nathaniel was responsible for stealing a dog used in dog-fighting and set out to catch him at the next fight. However he escapes by letting the dogs free to cause a diversion. Meanwhile Reid's old adversary inspector Jedediah Shine is brought in as the new head of H Division and makes no secret of his intention to catch Reid. Written by don @ minifie-1