Full Cast
-
Lewis MacDougall
Conor
-
Sigourney Weaver
Grandma
-
Felicity Jones
Mum
-
Toby Kebbell
Dad
-
Ben Moor
Mr. Clark
-
James Melville
Harry
-
Oliver Steer
Sully
-
Dominic Boyle
Anton
-
Jennifer Lim
Miss Kwan
-
Max Gabbay
Steven
-
Joe Curtis
Peter
-
Morgan Symes
Lawyer
-
Max Golds
5-Year-Old Connor
-
Frida Palsson
Lily's Mum
-
Wanda Opalinska
Female Nurse
-
Patrick Taggart
Teacher
-
Lily-Rose Aslandogdu
Lily
-
Liam Neeson
The Monster (voice)
-
Geraldine Chaplin
The Head Teacher (uncredited)
-
Jake Talbot
Rollercoaster Boy (uncredited)
-
Lee Bolton
Rollercoster Rider (uncredited)
-
Garry Marriott
Paramedic (uncredited)
