The 4 season of Murphy's Law (2001) was broadcast on BBC One from dimanche 27 août 2006 to mardi 29 août 2006. It consists of 3 episodes, the first one is called "Exile" and the last one "Strike Out".
Detective Sergeant Tommy Murphy is a maverick cop with a dark past. After failing a psychiatric assessment, he is given one last chance by his boss and given a dangerous undercover assignment. Murphy is a loner with little to lose and deals with everything on his own terms. This time around, however, Murphy has an ally in Detective Inspector Annie Guthrie.