This book started a little slow but after the first 1/3 I got into it more.
Most of the book is Jim & Norah recalling past adventures to Jim's school pals, Wally and Harry.
Then we have a mystery? plot in the last half.
Honestly it gave nostalgic tones of Australian storytelling. If you know country/outback characteristics, this is very reminiscent of the era of sheep and cattle stations with horses, camping and the aura of rural land. Very old Australian terms and quotes too, might confuse younger readers or overseas audiences a little.
There are a few questionable moments that haven't aged well, but it's a historical feature rather than innate cruelty, this doesn't excuse the attitude of the 1900s but it is accurate for the thinking of the time. It's something we can be thankful is changing with time and a warning of how social attitudes can be widely spread and accepted as the norm despite their twisted nature.