Ex-cop and investigator John Raven becomes involved with a killing carried out in England but arranged by US Intelligence services with the connivance of their English equivalents. And it just so happens that it is a friend of Raven who is manoeuvred by these faceless government agents into carrying out the murder.
When Raven starts asking questions about why his friend has been led into this mess, he discovers that to question such forces is a very dangerous occupation . . .