Official website: http://www.focusfeatures.com/amonstercalls
Casts
Lewis MacDougall
Conor
Sigourney Weaver
Grandma
Felicity Jones
Mum
Toby Kebbell
Dad
Ben Moor
Mr. Clark
James Melville
Harry
Dominic Boyle
Anton
Jennifer Lim
Miss Kwan
Morgan Symes
Lawyer
Frida Palsson
Lily's Mum
