Includes bibliographical references (pages 589-622) and index.

A Soviet agent called Sonia -- A 'good bottle man' -- An unsuspected communist connection -- Fully trained agent -- A strange appointment -- The dangerous Dr Kuczynski -- Swiss interlude -- Target-M15 -- A British bonus for Soviet spies -- In post at Blenheim Palace -- A dubok in a graveyard -- The two-faced Dr Fuchs -- The Kuczynski parachutists -- A mole called 'Elli' -- The return of Klaus Fuchs -- The 'blowing' of Sonia -- The rise of Roger Hollis -- A highly suspect escape -- The Cambridge conspiracy -- The great defection legend -- Chief liaison officer-for the K.G.B. -- Second-in-command -- The 'Whitewash' paper -- Momentus escapade -- In control -- A 'pig' called 'Lavinia' -- A 'real outsider' -- A defector in place? -- A spy in the labour party -- The numbers game -- A defector called 'Kago' -- Philby's defection -- The Mitchell case -- The Profumo case -- A clutch of curious incidents -- The 'Blunden' file -- The fixing of Blunt's immunity -- The interrogation of Leo Long -- The interrogation of Sir Anthony Blunt -- Big fish escapes as small fry -- A committee called 'fluency' -- The Canadian dimension -- Hollis's last cases -- The 'Drat' inquiry -- The Ellis case -- The American secret behind the D-notice affair -- Presents from Prague -- The interrogation of Sir Roger Hollis -- A belated purge -- Operation gridiron -- The first K7 report -- The second K7 report -- An ultra-secret warning -- A secret verdict of 'not out!' -- The public exposure of Sir Anthony Blunt -- An Aladdin's cave -- A flawed announcement -- Aftermath -- G.C.H.Q.'s billion-dollar spy -- Payment deferred -- A minor with major access -- Another 'good bottle man' -- The outlook of oversight.