Cheryl Campbell as Helen Foster (episodes 1-3) Jodie Comer as Kate Parks, a 23-year-old University graduate who has been secretly having a two-year affair with Simon Foster.
Cheryl Campbell – Helen Foster Jodie Comer – Kate Parks, 23-vuotias yliopistosta valmistunut nainen, jolla on ollut kahden vuoden ajan salasuhde Simon Fosterin kanssa.