Does anyone know of any good crime fiction authors who are/were police detectives or other professionals with inside knowledge of police investigative procedure and attitudes? I'm especially interested in authors from places other than the UK and US, set in the 1960's or later, but all suggestions welcome.
(I wouldn't usually count prosecutors, judges, etc. as police insiders, unless they are from countries where those professions actually take part in, or direct, the police investigation.)
Australia:
P. M. Newton (Detective, New South Wales Police Force)
https://www.penguin.com.au/authors/pm-newton
France:
Laurent Guillaume (Police Commander, mobile crime unit Val-de-Marne)
https://www.lefrenchbook.com/laurent-guillaume/
Norway:
Jørn Lier Horst (Senior Investigating Officer, Vestfold Police district)
http://www.salomonssonagency.se/jorn-lier-horst
Sweden:
Leif G. W. Persson (Professor in Criminology, National Police Board)
http://www.salomonssonagency.se/leif-gw-persson
United Kingdom:
Graham Ison (Detective, Scotland Yard's Special Branch)
http://www.grahamison.co.uk/the-author-2.html
Basil Thomson (Assistant Commissioner (Crime), Scotland Yard)
https://en.wikipedia.org/wiki/Basil_Thomson
United States:
Neal Griffin (Criminal Investigations Division Commander, Southern California)
http://nealgriffin.com/about/
Archer Mayor (Detective, Windham County Sheriff’s Office)
http://archermayor.com/about/
Dorothy Uhnak (Detective, New York City Transit Police Dept.)
https://en.wikipedia.org/wiki/Dorothy_Uhnak
Joseph Wambaugh (Detective Sergeant, Los Angeles Police Dept.)
http://www.josephwambaugh.net/bio.html
(I'll endevour to update this list as suggestions come in. Corrections or better links welcome.)