Steven Yeun as Derek Cho

Samara Weaving as Melanie Cross

Steven Brand as John Towers

Caroline Chikezie as Kara Powell

Kerry Fox as Irene Smythe

Dallas Roberts as Lester McGill

Mark Frost as Ewan Niles

André Eriksen as Colton Snyder

Claire Dellamar as Meg

Nikola Kent as Oswald

Lucy Chappell as Jenny

Bojan Perić as Miles

Annamaria Serda as Brenda

Jovana Prosenik as Dena

Nina Seničar as Tessa

Vladimir Aleksić as Nevil Reed

Scott Alexander Young as Frank

Olja Hrustic as CDC Official

Joe Lynch as Ray the IT Guy (uncredited)