Smiley first appears in "Call for the Dead", le Carré's debut novel. After an introductory chapter documenting Smiley's wartime bravery, the narrative moves to 1960, which finds the formerly heroic Smiley working a menial intelligence job, security-clearing civil servants. After a man he interviewed apparently commits suicide in despair over being a suspected communist, Smiley resigns from the Circus in disgust; the revelation that the man's death may in fact have been a murder spurs Smiley to launch an independent investigation with the help of his protege, Peter Guillam, and police detective Oliver Mendel. Smiley's investigation uncovers that the "suicide" was in fact a murder perpetrated by an East German spy ring operating in the UK and being operated by one of his own former agents, whom he accidentally kills in a physical altercation. Although the Circus offers him his job back as a reward, Smiley declines, instead leaving England for a tentative reunion with Ann, who had earlier left him for a racing car driver. Smiley spends much of the story bemoaning the loss of the talented agents who were his mentors prior to the war, and their replacement by such talentless bureaucrats as the current head of service, Maston, who is widely, if secretly, mocked.