Attorney Clara Quillen is stunned when she reads about the murders of three San Francisco lawyers and realizes her former boss, Bernard Kahn, is one of the victims. The lawyers were killed on the same night, in the same manner, each holding a copy of an often-misunderstood Shakespearean quote from Henry VI, Part II: "The first thing we do, let's kill all the lawyers." When SFPD Detective Roy Travis questions members of Kahn's law firm, he recruits Clara to aid his investigation since she has access to confidential client information that may shed light on potential suspects. As a long-time mystery fan, Clara jumps at the opportunity and agrees to become an amateur sleuth, working with Travis. During the course of the investigation, the murderer strikes again. And as the list of suspects continues to grow and Clara unearths information regarding elaborate blackmail schemes that incriminate both friends and colleagues, she receives a threat that she, herself, may the next victim unless she abandons her pursuit of the cold-blooded killer...