'The Bush Detective' is the sixth book in 'Outback Australia' series. This is set in 1907. Catherine Smith, wife of Herbert Smith, a hawker residing at Tego Springs, near Cunnamulla has been murdered. The Smiths were on friendly terms with a man named James Brokenborough, who stayed with them when he was out of work. Smith noticed a coolness develop between his wife and Brokenborough. On June 24, 1907 at noon, James Brokenborough reported to Herbert Smith he shot Catherine accidently while out pigeon shooting.
Sergeant Gray, Officer-in-Charge, Cunnamulla Police Station sought assistance of a detective to investigate the murder. The story continues.