Torri Higginson

as Sandra Sullivan

as Claire Malone(48 eps)

as Liz Sterling

as Marie Cook

as Charlotte Singer

as Marion

as Dr. Michelle Kessler(1 ep)

as Natalie Lawson(20 eps)

as Commander Truffault(2 eps)

as Opening Narrator (voice)(8 eps)

as Self

as Dr. Kaycee Leeds

as Evelyn

as Evelyn(1 ep)

as Elizabeth Weir

as Chief Geiger

as Alex(1 ep)

as Lorraine Healey

as Elizabeth Weir(64 eps)

as Jordan Hampton(2 eps)

as Dr. Katie Arlen

as Ms Sheila Newlands

as Kate(1 ep)

as Abby Wrigley

as Rebecca Curtis(1 ep)

as Katharine Strachan(32 eps)

as Angela Carver(3 eps)

as Caroline Chandler

as Claudia Hoffman(1 ep)

as Sara Gemmel

as Peggy

as Jenny

as Dr. Elizabeth Weir(3 eps)

as Mary

as Allison Doherty

as Samantha 'Sammy' Woods

as Kristen

as Claire

as Alyssa Selwyn(1 ep)

as Beth Kittridge(18 eps)

as Beth Kittridge

as Beth Kittridge

as Beth Kittridge

as Liddie (19-38)(2 eps)

as Gwen

as Georgia(1 ep)