Guest Stars Tom Butler as Lesley Adams Garry Chalk as Lt. Michael Oakes Colin Lawrence as Benjamin Abani Mark Moses as Lt. Erik Carlson Don Thompson as Janek Kovarsky Alan Dale as Senator Eaton Tyler Johnston as Alexi Giffords Andrew Airlie as Dr. Andrew Madigan Co Starring Seth Isaac Johnson as Denny Larsen Evan Bird as Tom Larsen Randal Edwards as Ray Jones Sean Owen Roberts as Logic Chelsea Ricketts as Tina Arien Boey as Davie Robert Parent as Duncan Sarah Strange as Claire Sean Devine as Dr. Andrew Newman Ted Whittall as Don Craig March as Fire Inspector Sarah Hayward as Jackie Lilli Clark as Nurse Katie Jordan Uncredited Eric Breker as Duke Perry Adam Charles as Young Man