Londoner Feef Symonds is drawn into spying on her own government by her lover, a CIA agent, who needs her help rooting out Soviet operatives at the heart of the British establishment. However, he has a hidden agenda.

Feef's lover goes missing as things begin to heat up in her hunt for the Russian mole.

The truth about Jarvis is revealed.

A trap is laid by the Russian mole, who will kill Feef if she makes the wrong move.

Feef finds out exactly who the mole is.

Feef is forced into the mole's path.