Guest Stars Lachlan Murdoch as Constable Henry Higgins Shanice Banton as Violet Hart Samantha Walkes as Cassiopeia 'Cassie' Bright Mark Taylor as Isaiah Buchanan Hannah Galway as Ellen Kirby James Hicks as Robert Walsh Jonathan Goad as Colonel Michaels Mike Shara as Dr. Grainger Niamh Carolan as Maggie Drew Robert Ifedi as Recruit Nik Salt as John Walsh Roland Piers as David Symington
