In one, Hearn describes a single day as head chef at the high-end beachfront Bryron Bay restaurant Rae's on Watego's.
This is a day that begins with Paris Hilton's unexpected arrival for lunch and ends in far more dramatic fashion.
In the other strand he takes us back to the beginning of his accidental career in hospitality and provides readers with a front-row seat to the theatre of his heroin addiction.
Both strands are raw, confronting and honest.
Central to the whole book is Hearn's love-hate relationship with heroin and, while ultimately it serves as a cautionary tale, there are places where he describes the drug with an almost romantic sense of longing.
Take this description of how he first experienced getting high: "The sensation of my heart pumping heroin through my bloodstream was profound. Prior to that life as I understood it could be depicted as a series of random sketches that formed a clumsy whole.
"Now it all came together in the most warmly felt of ways, like hollandaise sauce."
Hearn had a pretty rough start in life.
His parents followed an alternative lifestyle and gave away all their money.
By the time he was 15 his mother had left the family to become a prostitute and he was a kitchen apprentice in a local restaurant.
He doesn't dwell on this, however, or use it as an excuse for passing the greater part of his youth consistently off his chops on hard drugs.
There's no self-pity and certainly no embarrassment as he describes the downs and downs of those difficult early years.
Just as compelling is his account of an eventful day behind the six-burner stove at Rae's.
It includes the things you would expect: the rough kitchen repartee, the scramble to get plates of food on to the pass and into the dining room. But there is also a tenderness in Hearn and the way he relates to his crew - Jesse, Choc and Soda.
Hearn wrote High Season after quitting Rae's and enrolling in a university writer's course.
His prose is fluid and succinct whether he's describing intense grief or the skill of cooking a perfect steak.
Foodies won't find much to turn them on here - Hearn is more about the relationships in a kitchen than what ends up on the plate.
But as an insider's expose of the high drama of both restaurant life and addiction it's fascinating.
It may not be as well seasoned as Kitchen Confidential, but High Season is still worth digesting.
