London's greatest investigator has arrived.
When Eliza Scarlet's father dies, he leaves her penniless, but she resolves to continue his detective agency. To operate in a male-dominated world, though, she needs a partner... step forward a detective known as the Duke. Eliza and The Duke strike up a mismatched, fiery relationship as they team up to solve crime in the murkiest depths of 1880’s London.

Secrets and Lies (Episode 1)
Air date: 2026-01-11
Runtime: 50 min
Overview: A psychiatric patient escapes after a killing, leaving a mystery and unknown corpse. Blake enlists Eliza's help to investigate.

Trafalgar Spring (Episode 2)
Air date: 2026-01-18
Runtime: 50 min
Overview: A divorcing elite couple's scandal deepens when their settlement leaks and their racehorse vanishes. Each spouse accuses the other amid blackmail and murder, serving as a possible warning to Eliza and Blake.

The Delivery (Episode 3)
Air date: 2026-01-25
Runtime: 53 min
Overview: A treasure hunt brings Moses back to London from Paris to sell a priceless diamond. As Eliza welcomes Moses back to the fold, Clarence is determined to prove that he is every bit as good as his predecessor and a friendly rivalry ensues.

Bad Blood (Episode 4)
Air date: 2026-02-01
Runtime: 53 min
Overview: Charlie Phelps, the new Detective Inspector at the City of London Police, hires Eliza for a case involving his uncle, Dylan Cooper. It turns out that Scotland Yard is also after Cooper who has committed crimes in both jurisdictions, leaving Eliza in the middle.

The Night Shift (Episode 5)
Air date: 2026-02-08
Runtime: 53 min
Overview: Dylan Cooper has been nabbed and is being held in the cells at Scotland Yard. His gang wants to spring him out, which will lead to a long night for Blake and new detective George Willows.

The Line of Duty (Episode 6)
Air date: 2026-02-15
Runtime: 53 min
Overview: When the mysterious death of a foreign ambassador sparks political intrigue, Eliza is called to investigate – this time, at the request of the formidable Governess. Tasked with solving the case alongside Inspector Blake, Eliza finds herself working with a woman whose power and intellect mirror her own.