Arne Dahl: Bad Blood (2012)

An American serial killer is on board a plane from New York to Stockholm. Without a proper identification and with great urgency A-group try to locate this passenger before Sweden inadvertently imports it's first American serial killer. The serial killer enters Sweden, and very soon he begins his killing spree. His methods are blood thirsty and can be traced back to the Vietnam War. A collaboration with the FBI begins in an desperate attempt to catch him.