Murphy is given the seemingly routine pick up of one, Anna Green from London Airport and delivering her to a meeting with George Cowley at HQ.
Who is the mysterious Anna Green? Why does she seem familiar? Why is George Cowley adamant that she enter the protective custody of a CI5 safe-house? Why does he then pull older, more experienced agents out of semi-retirement for this mysterious woman? Why does a seemingly random woman with no apparent connection to CI5, require twenty-four-hour protection?
Only Cowley, Murphy and Dr Atkins, know her true identity until a random encounter opens up old wounds and new emotions.