Season 1

Mira Calder races to figure out mystery code names provided by her dying brother.

Mira, upset at the death of her brother finds a rogue salvager at a North Sea oil rig and recruits her for a deep-sea investigation.

Mira and Len attempt to decrypt the meaning of a coded message to help solve the mystery of her father.

Mira gets provided coordinates to a mysterious location whilst action escalates on the surface.

Follow Mira as she realises the weight of her family's actions in an epic final.