In Dublin, the acid-scarred, razor-slashed remains of a girl is uncovered in the boot of the Swiss Ambassador's limousine. The Ambassador, his household and also staff members all become instant suspects. Faced with the problem of diplomatic immunity, the law enforcement officer accountable of the instance brings in John Norton, an ex-Inspector known for his harsh techniques, to execute an "unoffical" examination. While Norton develops a connection with the Ambassdor's appealing little girl, a number of much more gruesome murders happen ...