Patient Zero

Matt Smith

Morgan

Natalie Dormer

Gina

Clive Standen

Colonel Knox

Agyness Deyn

Janet

Stanley Tucci

The Professor

John Bradley

Scooter

Colin McFarlane

General Pierce

James Northcote

'Pete Townshend'

Frederick Schmidt

'Joe Cocker'

Pippa Bennett-Warner

Linda

Susanna Herbert

Anna

Joshua Osei

Soldier #1

Yumiko Hanasaka

American Refugee (uncredited)

Dilyana Bouklieva

Military Trauma Medic (uncredited)

Anastasia Harrold

Sorority Girl (uncredited)

Jorge Leon

US Army Sergeant Keogh (uncredited)