Cirrus@Austlit

'An anti-Vietnam War demonstration by angry Australian college students in the sixties results in the death of a young woman marcher. No one seems to know how she came to be struck down. But as the police seek to charge one of the leaders of the protest, Jefferson Shields, a private detective, eliminates the most likely suspects and, a la G. K. Chesterton, identifies the only possible culprit.'

Source: Publisher's blurb (Soho Press).