Andrea Lee Norwood
Grace
Molly Dunsworth
Alice
Jim Fowler
Eric
Glen Matthews
Joe
Shelley Thompson
Mary
Daniel Lillford
Lewis
Sophie Elliott
Young Grace
Glen Lefchak
Grace's Father / Bunker 8 Radio Voice
Geneviève Steele
Grace's Mother
Mark Critch
News Radio Announcer (voice)
Liam MacDonald
Soldier
Simon Philippe Allard
Paulson Family Member
Tessa Davis
Paulson Family Member
Cheryl Sampson
Paulson Family Member
Iain K. MacLeod
Officer (as Iain MacLeod)
Adam Smith
Engineer
Jonathan Baha'i
Engineer