Guest Stars Catherine Russell as Frances Felton Patrick Walshe McBride as Caleb Felton Ella Bruccoleri as Rena Friedman Rhashan Stone as Pete McLoud Oli Higginson as Jack Felton Adrian Schiller as Nicholas Levine Laurence Ubong Williams as Kai Whishaw Philip Bulcock as Laurence Carter Michael Moreland as Frank Townsend Natasha Magigi as Nadine Shireen Farkhoy as Sophie Carter Elizabeth Marsh as Mel Dorothea Myer-Bennett as Sadie Friedman