The Sisterhood (Macmillan UK Audio Books)
by Colin Forbes
Category: Adventure stories

Paula Grey 'witnesses' the murder of Norbert Engel, key German Statesman. A veiled woman entered and left the building. One by one, the elite strongmen in a leaderless Europe are assassinated. Tension rises as Tweed, Paula and Bob Newman fly to Zurich, where a fresh assassination takes place. Again a veiled woman was seen. Tweed's pursuit leads to a strange village in Vienna where attempts are made to kill him.