The story of how it all began. It’s twelve years earlier and Duke and Eliza meet for the very first time.

Things are going well for Eliza until a familiar face shows up to question her role at Nash & Sons. Meanwhile, Duke receives an offer that brings their relationship to a crisis point.

When Eliza receives a bomb in the mail, she teams up with Duke, Moses and her old enemy Patrick Nash to find out who is behind the delivery.

While Eliza and the Duke struggle around the edges of their relationship, private investigator Nash is shot just as Eliza agrees to work with him.

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.

A psychiatric patient escapes after a killing, leaving a mystery and unknown corpse. Blake enlists Eliza's help to investigate.

Patrick Nash finds himself unexpectedly enjoying an early release from prison, but he must complete an impossible task or get thrown back in jail; Ivy's career is gaining strength, but it may put her marriage plans in jeopardy.

Eliza is on the trail of a fugitive who is charged with murder. She must find him before the police do or risk losing everything.

Eliza is on the verge of earning life-changing money when she offers to help the heir to an unclaimed fortune.

The all-powerful Guild of Private Detectives take an instant dislike to the new Inspector Blake because of his ban on the use of Private Detectives at Scotland Yard. But when the Chairman of the Guild turns up dead, Blake finds himself working alongside Eliza whether he likes it or not. Meanwhile, Ivy takes on a new opportunity, but what will the consequences be for her engagement to Mr. Potts?

Eliza faces a conflict of interests when she is hired to look into the personal life of Police Commissioner Fitzroy.

As London's only female detective, Eliza is struggling to get work. Desperate for money, she takes a seemingly impossible case; proving the innocence of a man found at a murder scene with a bloodied knife in his hand who has pleaded guilty.

The sister of a missing woman hires Eliza to find her, but when the case is closed by the police, new tensions are created between Eliza and the Duke.

The Duke hires Eliza to spy on suffragettes. Going beyond her instructions, she gets involved in Britain’s biggest plot since Guy Fawkes.

When Eliza Scarlett's father dies suddenly, she's faced with a stark choice. Accept the fact she is now penniless or take on and run her dad's detective business, but can she succeed against all the odds in this male-dominated world?

A valuable sketch by the late Charles Darwin has been stolen and Eliza is hired by an insurance company to find it, but a twist soon emerges.

When a magician vanishes into thin air, Eliza is hired to investigate, despite the fact that Duke is already on the case.

A post-mortem portrait photographer gets messages from beyond the grave. Eliza’s investigation takes her into the spirit world.

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.

Searching for the secret to her father’s fate, Eliza goes to an abandoned prison. Eliza and the Duke stumble on a criminal enterprise.

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.

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.