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.

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

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.

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

Forgery, murder, and false accusation strain Eliza’s forensic skills as she gets to the bottom of her father’s death.

Eliza bumps into the girl who made her life a misery growing up. Eliza suspects she may be a criminal, but no one wants to hear it.

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.

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

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.

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

A famous mystery writer is at the centre of Eliza's investigation when a series of murders copy scenes in his books. Meanwhile, the Duke is also juggling problems at work with a new superintendent and a troubled young detective.

Detective Fitzroy sees one of his colleague's plant evidence on a suspect. With Duke away, Fitzroy turns to Eliza for help.