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