Parting Breath

Detective Inspector Sloan knew there would be trouble when he was called in to the student sit-in at Calleshire University. The dons were nervous, the students excited - a clash of some kind seemed inevitable. But what did happen was totally unexpected, with the discovery of a man found bleeding slowly to death and able with his parting breath only to utter one enigmatic phrase. But what significance can 'Twenty-six minutes' really have?