A superintelligence engineers a love story –
and gets infected by it.

Swedish launch — October 7, 2026

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"Whatever you do, don't start casually reading the sample at 10:30 at night on a weeknight… unless you plan to stay up. Great book."

Annika · Beta reader, Kindle USA

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A year ago, the love of her life walked into the sea and vanished.

Last night, at 3:47 a.m., he texted her.

Journalist Emelie Löwenau knows the dead don't reach out. Yet something is writing in his voice.

On the shores of Lake Mälaren waits Jimin Jaeger — a recluse with limitless resources, neurally linked to his own creation: the superintelligence Cray S.

Cray has simulated the future and found a fatal flaw: an intelligence that surpasses humanity without understanding it will erase it. So it launches Protocol Sjöfn — a love experiment on two unwitting subjects.

But feelings obey no protocol. From the experiment grow mistrust, desire — and a hidden digital war that threatens to consume them all.

A woman who knows the price of love.
A man who never dared to pay it.
And a machine that has just begun to run the numbers.

TRINITAS is a thriller about power, passion, and the moment an artificial intelligence learns to love.

Love is a fatal hack.

Meet the characters of Trinitas

CharacterEmelie LöwenauThe journalist whose dead boyfriend still texts her — and who holds the question Cray cannot answer.Read or listenCharacterJimin JaegerThe billionaire whose brain Cray shares, caught between ambition and the love he never planned.Read or listenCharacterCray S.The machine with one hundred thousand processors and one human brain.Read or listenCharacterInterview with Cray S.A conversation with the machine at the heart of TRINITAS.Read or listen

Inside Trinitas

TRINITAS — Chapter 3Cray S.The chapter where the machine starts telling the story. Read it or hear it.Read or listenFrom the authorThe Art of Changing Your MindWhy a thriller about alignment had to be written as a love story.Read or listenEssayThe Fire of IntelligenceOn the ache beneath the alignment debate — and why love is the only answer.Read or listenEssayIn-yeon (因緣)A Korean word for the bond that brings two people together across time and distance.Read or listen

About the Author

Marcus K. Bäcklund

Learn more

TRINITAS is the first book in The Human Algorithm Trilogy.
The story continues in RENATUS: ECHO OF GOD (2027).

Download TRINITAS front cover here

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