Main Characters Dr. Nikki Alexander 171 main appearances Prof. Leo Dalton 106 main appearances Jack Hodgson 95 main appearances Dr. Harry Cunningham 94 main appearances Prof. Samantha "Sam" Ryan 60 main appearances Clarissa Mullery 59 main appearances Dr. Thomas Chamberlain 49 main appearances Trevor Stewart 24 main appearances Cara Connelly 16 main appearances Professor Gabriel Folukoya 20 main appearances Velvy Schur 20 main appearances Simone Tyler 10 main appearances Dr. Adam Yuen 4 main appearances
Recurring Guest Characters Mark 2 guest appearances Duty Sergeant 2 guest appearances Kate Hulton 2 guest appearances Jim Clout 2 guest appearances DC Gabby Lawson 2 guest appearances Graham 2 guest appearances DCS Robert Drake 2 guest appearances Martin Cross 2 guest appearances Mary 2 guest appearances DCI Jane De Freitas 2 guest appearances Police Officer 2 guest appearances Chrissie 2 guest appearances DCI John McLeod 2 guest appearances Gina 2 guest appearances Priya Beck 2 guest appearances Owen Hanmore 2 guest appearances Lana Sutherland 2 guest appearances D.I. Luke Nelson 2 guest appearances Jamal Jennings 2 guest appearances Witness 2 guest appearances ⇤ « 1 2 3 4 5 6 7 8 9 10 » ⇥