Grace is on a special FBI Taskforce for a prostitution ring. Her home life is about to be complicated by her mother, Vivian, who shows up after a long absence. Tom has something to say to Grace. Ethan and team negotiate their first contract.

Registrar Kate Dickinson tries to balance her personal life with the daily dramas of births, deaths and marriages and the impact they have upon her and her staff at the local Register Office in Leeds.