Mystery

Oskar finds himself in the middle of an assassination attempt with geopolitical implications as he closes in on Mephisto.

Ivy is utterly devoted to her new job at Scotland Yard, leaving Eliza and Mr. Potts to fend for themselves at home as Eliza looks into a serial killer. 

In the wake of disaster, Oskar is forced to go into hiding when powerful forces array against him as he tries to discover the identity of the government traitor Mephisto.

Eliza is still trying to get on Alexander Blake's good side, and finds more chances when a member of the Guild of Private Detectives is found dead.

After several killings, Max and Oskar go undercover at a casino to try to track down the government enemy Mephisto.

With William staying in New York permanently, Eliza tries to impress his replacement so she can continue working with the police. But Alexander Blake refuses to hire private detectives.

A prominent criminal is captured and offers information about an enemy of the Empire, whom Oskar begins to suspect is a high-powered government traitor.

Judith determines that a fourth murder is going to take place, and Becks and Suzie rush to prevent it from happening, in the finale. 

Tanika brings on Judith, Becks, and Suzie as advisers to her investigation despite the misgivings of colleagues, as they race to prevent a third murder.

Becks and Suzie join with Judith to help her investigate the murder of Stefan Dunwoody and Iqbal Kassam, offering their various expertise and information.

The team wraps up their investigation into the disappearance of a woman from a small town, discovering some shocking information along the way.

Judith Potts is convinced she heard a gunshot from her neighbor's property, and investigates herself when she feels the police don't take her seriously. 

A woman goes missing from her small town, setting the close-knit community abuzz and turning them against an outsider. Then a body shows up. 

The team unites behind Hendrik as he faces a frightening future – and distracts himself with trying to decode a medical breakthrough by two murdered scientists.

Susan and Atticus unravel both of their mysteries in the final episode of Moonflower Murders, while Susan also figures out her future with Andreas.