Guest Stars Patrick Walshe McBride as Sebastian Brudenell Tomos Eames as DS Joe Keeler Yasmin Kaur Barn as PC Viola Deacon Tamzin Outhwaite as Jessica Duke Niamh McGrady as Cassie Dorcas Harki Bhambra as Amit Azim Ed Brody as Rory Harrison Gus Barry as Charlie Duke Hannah Saxby as Isabella Duke