Barrister Martin Ainsworth is sent to West Berlin by British Intelligence to make contact with his former lover, a suspected Communist agent, and it’s up to him to find out the truth and to spot her contacts.

As he travels through a divided Berlin, his dual role becomes emotionally tortuous, his lack of training an unforeseen hazard, and he turns more reckless than his peers had ever bargained for …

‘A more or less conventional spy story is suddenly turned inside out by a most ingenious twist’ Guardian