Paula Grey 'witnesses' the murder of Norbert Engel, key German statesman, in Vienna. A veiled woman entered and left the building. Is she a member of the insidious Sisterhood? In a leaderless Europe, its few strong men are assassinated. Tweed fears an Eastern power - not Russia - is planning to take over the Continent. Tracking the mastermind, he suspects Captain Wellesley Carrington, Dorset landowner, his neighbour Amos Lodge, eccentric strategist, and Tina Langley, Carrington's 'friend'