Season 1
A new phenomenon starts happening all over the world. Powerful flashes of light occur in the ocean, and people from the past appear from three time periods; the stone age, the Viking age, and the late 1800s.
Episode 1
A dead woman floats ashore at Tjuvholmen and Lars Haaland need to investigate the matter with his new partner, Alfhildr Enginnsdottir from the Viking Age.
Episode 2
The investigation leads Lars and Alfhildr into Oslo's new and multi-temporal underground world.
Episode 3
Lars and Alfhildr have a new main suspect in the Tjuvholmen murder: a rich entrepreneur from the Stone Age.
Episode 4
When Lars's daughter is involved in a mysterious accident at sea, Alfhildr has to seek Norse help to continue the investigation.
Episode 5
In the hunt for answers in the Tjuvholmen case, Lars becomes his own worst enemy.
Episode 6
The hunt for the Tjuvholmen killer is coming to an end, and Alfhildr must face a hard truth.