Firewall () is a crime novel by Swedish author Henning Mankell. The novel was translated into English by Ebba Segerberg.
A series of bizarre incidents sweep across Sweden: a man dies in front of an ATM, two young women slaughter an elderly taxi driver, a murder is committed aboard a Baltic Sea ferry, and a sub-station engineer makes a gruesome discovery while investigating the cause of a nationwide power cut. As Wallander investigates, he uncovers a sinister plan to bring the Western world to its knees.
Lisa Siwe directed a 2006 screen adaptation of Firewall, starring Rolf LassgÃÂ¥rd as Wallander. In 2008, British broadcaster BBC One broadcast a 90-minute adaptation as part of its Wallander television series starring Kenneth Branagh.