Genealogy of characters in A Blunt Instrument

       +----------------+-------------------+
       |                |                   |
Ernest Fletcher      Ted=?            Lucy Fletcher
                        |
                  Neville Fletcher

*******************

     +------------+
     |            |
Sally Drew      Helen=John North
 

*******************

Police chain of command

Superintendent Hannasyde
           |
    Inspector True     
           |
  Sergeant Hemingway
           |
  P.C. Malachi Glass