I think you are correct, AJD, in that this is an American yarn that has been adapted for Australian consumption.
The cover is a local production, of course, thus the Old Parliament House illustration and the prominent "Canberra" statement.
Internally, the shot of the War Memorial exterior looks nothing like the ACT offering - in fact it looks far more "American" ala their Supreme Court, National Archives etc. I cannot think of any building in Canberra that looks like it - except for the US embassy
Interesting book. First one I have seen.