London in the swinging sixties is a hive of violent antisemitism, as Jewish hairdresser Vivien learns when she arrives in search of her beau.

Now undercover, Vivien strives to convince neo-Nazi leader Colin Jordan that she is on his side. Her spying turns up an alarming development.

Vivien’s link to Jordan is complicated by the arrival of his wife. The police rebuff warnings from the 62 Group, who must act on their own.

As Vivien’s deception starts to crumble, she races to secure incriminating evidence against Jordan. Meanwhile, Jack faces mortal danger.