Guest Stars Gabrielle Green as Katrina MacKenzie Louisa Connolly-Burnham as Shannon Kelly Mark Fleishmann as Tim Jeffries Rachel Teate as Kara Shorelle Hepkin as Kay Jonathan Raggett as Jimmi Nahom Kassa as Sam Niek Versteeg as Liam Hunter Angela Lonsdale as Emma Marcus Garvey as Daniel Clara Onyemere as Miss Parrish Ursula Holden Gill as Miss Fitzgerald Daymon Britton as Lab Technician Chiron Miller as Dr. Okinawa
