S.J. Thiessen
AUTHOR

S.J. Thiessen

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Simon James (S.J.) Thiessen is a Tasmanian crime fiction author based in Hobart, where he lives with his wife Jane and two of their four children (the eldest two sons having left home to make the same mistakes Simon made at their age).

After a career spent founding businesses, advising leaders, and consulting on workplace culture, Simon eventually admitted something to himself: he didn’t just want to write a novel—he wanted to be a novelist. The result are the Detective Inspector Terry Stratton mystery crimes; a growing series of Australian crime novels set firmly in lutruwita / Tasmania.

Stratton is a detective who struggles with politics, distrusts authority, and prefers uncomfortable truths to convenient answers. Unsurprisingly, Simon relates. The series began with Crossing the Patriline, a prequel novel, and continues with Aether and Degrees of Retribution. While each book stands alone, the series builds a wider world of recurring characters, long grudges, and professional rivalries—where past decisions echo loudly into the present.

Simon’s stories are shaped by his enduring love of classic and contemporary mysteries, and by themes he returns to often: justice and power, belonging and inclusion, dyslexia, identity, and resistance to systems that protect themselves before they protect people.
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