Based on Highsmith's 1960 thriller ("The Blunderer"),  A Kind of Murder investigates how quick one is jump to conclusions of guilt or innocence.  Architect Walter Stackhouse and his wife Clara have a troubled marriage, but is it troubled enough for Walter to commit murder?  On the other side of town Kimmel is accused of murdering his wife and regularly harassed by the cops.  Did he or didn't he do it?