Guest Stars Shvorne Marks as Monica Hicks Samuel Barnett as Anthony Donn Jemima West as Kay Belborough Margaret Clunie as Elva Piper David Oakes as Joss Bixby Hilton McRae as The Great Zambezi Ben Mansfield as Bruce Belborough Lewis Rainer as Albert Potter Meghan Treadway as Jeannie Hearne Vincent Riotta as Harry Rose Nick Sampson as Chief Constable Uncredited Colin Dexter as Gentleman in College Chapel