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Zero Day: a stunningly vicious thriller with a heart-stopping twist.
BLOOD MUST HAVE BLOOD.
Her small body hangs from a dockside crane in Port-au-Prince, Haiti, scarred beyond all recognition. Local police close the case within days. Just another death in Haiti's gang violence epidemic.
But to Girl Zero, something stands a deep bite mark on the victim's left forearm. The calling card of the 'Engineer'.
Three years ago, Zero barely escaped death on the Engineer's iron altar.
Now he's back.
But this is Haiti, crime capital of the world. A failed state. An ungoverned space. A land of black magic and death. The perfect place for the Engineer to build the bloodiest altar imaginable.
Zero means to sacrifice him on it – if she can survive that long…
HE DREW FIRST BLOOD. SHE'LL BLEED HIM DRY.
Zero Day is the pulse-pounding new dark thriller from Mike Grist, perfect for fans of Jeffery Deaver, Karin Slaughter, Lisa Gardner or Dean Koontz.
WHAT READERS SAID ABOUT GIRL
⭐️⭐️⭐️⭐️⭐️ "Wow, what can I say? If you want to be thrilled, chilled and spilled by an action-packed suspense thriller, get this book. The minute I started reading my heart spiked and didn't settle until long after the final twist!" - Tori
⭐️⭐️⭐️⭐️⭐️ “A maze-like plot with twists and turns that I never saw coming – I read it all night!" – Anna
⭐️⭐️⭐️⭐️⭐️ "Gets its claws in you and will not stop until you have read every last word." – Queen Chakra
⭐️⭐️⭐️⭐️⭐️ "Girl Zero is a revelation – powerful, violent, flawed – I cannot wait for more." - Hunter
⭐️⭐️⭐️⭐️⭐️ “A suspenseful rollercoaster of a book – I simply couldn't put it down!” - Jon
⭐️⭐️⭐️⭐️⭐️ “Outrageously well-written – twists that just kept coming - I finished it in less than a day.” – Maria
⭐️⭐️⭐️⭐️⭐️ "Made me think of my favorites in the psychological and serial killer crime genres – Tess Gerritsen's Kay Scarpetta, Ann Cleeves' Maura Isles, Dean Koontz's Nameless, Stephen King's Mr. Mercedes, Thomas Harris' Hannibal Lecter. Grist however comes up with something terrifyingly new – chilling, exciting and very fulfilling." – Eisler
Her small body hangs from a dockside crane in Port-au-Prince, Haiti, scarred beyond all recognition. Local police close the case within days. Just another death in Haiti's gang violence epidemic.
But to Girl Zero, something stands a deep bite mark on the victim's left forearm. The calling card of the 'Engineer'.
Three years ago, Zero barely escaped death on the Engineer's iron altar.
Now he's back.
But this is Haiti, crime capital of the world. A failed state. An ungoverned space. A land of black magic and death. The perfect place for the Engineer to build the bloodiest altar imaginable.
Zero means to sacrifice him on it – if she can survive that long…
HE DREW FIRST BLOOD. SHE'LL BLEED HIM DRY.
Zero Day is the pulse-pounding new dark thriller from Mike Grist, perfect for fans of Jeffery Deaver, Karin Slaughter, Lisa Gardner or Dean Koontz.
WHAT READERS SAID ABOUT GIRL
⭐️⭐️⭐️⭐️⭐️ "Wow, what can I say? If you want to be thrilled, chilled and spilled by an action-packed suspense thriller, get this book. The minute I started reading my heart spiked and didn't settle until long after the final twist!" - Tori
⭐️⭐️⭐️⭐️⭐️ “A maze-like plot with twists and turns that I never saw coming – I read it all night!" – Anna
⭐️⭐️⭐️⭐️⭐️ "Gets its claws in you and will not stop until you have read every last word." – Queen Chakra
⭐️⭐️⭐️⭐️⭐️ "Girl Zero is a revelation – powerful, violent, flawed – I cannot wait for more." - Hunter
⭐️⭐️⭐️⭐️⭐️ “A suspenseful rollercoaster of a book – I simply couldn't put it down!” - Jon
⭐️⭐️⭐️⭐️⭐️ “Outrageously well-written – twists that just kept coming - I finished it in less than a day.” – Maria
⭐️⭐️⭐️⭐️⭐️ "Made me think of my favorites in the psychological and serial killer crime genres – Tess Gerritsen's Kay Scarpetta, Ann Cleeves' Maura Isles, Dean Koontz's Nameless, Stephen King's Mr. Mercedes, Thomas Harris' Hannibal Lecter. Grist however comes up with something terrifyingly new – chilling, exciting and very fulfilling." – Eisler
Audible Audio
Published May 15, 2026
About the author
Mike Grist
32 books137 followersMike Grist is the British/American author of the Christopher Wren and Girl Zero thriller series.
For 11 years Mike lived in Tokyo, Japan, exploring and photographing the dark side of the city and the country: gangs, cults and abandoned places. Now he writes from London, UK, about ex-DELTA operator Christopher Wren - an anti-hero vigilante who brings brutal payback for dark crimes on an unprecedented scale.
Mike also writes science fiction and fantasy as Michael John Grist:
For 11 years Mike lived in Tokyo, Japan, exploring and photographing the dark side of the city and the country: gangs, cults and abandoned places. Now he writes from London, UK, about ex-DELTA operator Christopher Wren - an anti-hero vigilante who brings brutal payback for dark crimes on an unprecedented scale.
Mike also writes science fiction and fantasy as Michael John Grist:
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