Matrimonial CausesMatrimonial Causes is 1993 Australian novel by Peter Corris featuring private detective Cliff Hardy. It was the 17th book in the series. It explores Hardy's first case.ReceptionThe Canberra Times wrote "The private-eye novels of Corris are shorter than those of Dashiell Hammett, his apparent model, and therefore less tedious; but if you are looking for a touch of Raymond Chandler imaginativeness or elegance of design then look elsewhere."