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I Know Who Did It
  • Published: 14 July 2026
  • ISBN: 9781405964913
  • Imprint: Michael Joseph
  • Format: Paperback
  • Pages: 400
  • RRP: $28.00

I Know Who Did It

Formats & editions
Paperback
14 July 2026
EBook
12 Feb 2026
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A dark and twisted early thriller from the dark master of suspense, Alex North

Every year Detective David Groves receives a birthday card for his son - even though he buried him years ago.

His son's murder took everything from him, apart from his belief in the law, even though the killers were never found. This year, though, the card bears a different message: I know who did it.

Meanwhile, a woman who died in a car accident is claiming to be back from the dead - with a terrifying account of what she's been through.

The answer to both lies with the kind of people you want to run from - and uncovering the truth means going through hell . . .
  • Published: 14 July 2026
  • ISBN: 9781405964913
  • Imprint: Michael Joseph
  • Format: Paperback
  • Pages: 400
  • RRP: $28.00
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Also by Alex North

The Man Made of Smoke
The Shadow Friend
The Half Burnt House
Black Flowers
Dark Room
You Can Run
The 50/50 Killer
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Praise for I Know Who Did It

The best crime novel of the decade

Steve Cavanagh

Praise for Alex North

Shades of Thomas Harris and Stephen King but brilliant in its own right

C.J. Tudor

First it's spooky. Then it's scary. Then it's terrifying

A.J. Finn

A thriller that is both terrifying and utterly heartbreaking. Mesmerising and masterful

Mark Billingham