
Irish Detective Theo Richter travels to a small town in New Zealand and teams up with Māori Detective Diana Huia to find a missing Irish couple.

As Diana struggles with being on home ground. Richter fights his own demons as they both work hard to find Sinead and Ronan.

Irish gangster Derry Fallon becomes a prime suspect in the couple’s disappearance but when he remains elusive and Irish journalist Aileen Ryan disappears, the case begins to fall apart.

With two bodies in the morgue, Richter and Diana make a discovery which connects Sinead and Ronan to a historical case called the Mountain Murderer.