First broadcast 1st October 1979.
Control to Smiley - 'There are three of them - and Alleline '.
Smiley recalls the past - his involvement with Tinker, Tailor.
Soldier, Poorman, and he remembers Karla, the legendary Head of Moscow Circus.
George Smiley: Alec Guinness
Peter Guillam: Michael Jayston
Alwyn: Warren Clarke
Mendel: George Sewell
Toby Esterhase: Bernard Hepton
Percy Alleline: Michael Aldridge
Roy Bland: Terence Rigby
Bill Haydon: Ian Richardson
Ricki Tarr: Hywel Bennett
Karla: Patrick Stewart
Lacon: Anthony Bate
Fawn: Alec Sabin
Alisa Brimley: Marjorie Hogan
Paul Skordeno: Joe Praml
