Pre-order
1
of
1
I Know Who Did It
Brief Description
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,...
Read More
Format: Paperback / softback
$2600
Unit price
/
Unavailable
Pre-order
Releases
16th
February 2027
(Approx. Date)
Pre-order "I Know Who Did It" now to secure your copy from our first shipment
Found a better price? Request a price match
I Know Who Did It
$2600
Unit price
/
Unavailable
Latest News
Meet Reverie Puzzles: Puzzles Made for Book Lovers
Reverie Puzzles have arrived at Book Hero and they might just be the perfect puzzles...
New ACOTAR Puzzles Are Coming to Book Hero!
Pre-order Official ACOTAR Puzzles coming soon to Book Hero! From a trip to Velaris and...
Pick Up a Poem this Poetry Day
August 28th is National Poetry Day here in Aotearoa. What better excuse to try something...
Meet Trevell and Pieces & Peace: New Brands at Book Hero!
Meet French brands Trevell and Pieces & Peace, with beautiful illustrated artwork, cosy and bookish...
New Releases to add to your TBR this week (26th August)
This week we have the perfect new release for Father's Day (it's coming up soon!)...
See more
Book Hero Magic formatted this description to make it easier to read. While it's new and
still learning, it may not be perfect - your
feedback is welcome!
Description
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...
Book Details
INFORMATION
ISBN: 9781405964913
Publisher: Penguin Books Ltd
Format: Paperback / softback
Date Published: 15 January 2026
Country: United Kingdom
Imprint: Penguin Books Ltd
Audience: General / adult
DIMENSIONS
Spine width: 35.0mm
Width: 129.0mm
Height: 198.0mm
Weight: 500g
Pages: 400
About the Author
Alex North was born in Leeds, where he now lives with his wife and son. He studied Philosophy at Leeds University, and prior to becoming a writer he worked there in their sociology department. The Whisper Man was a Sunday Times and New York Times bestseller, and is being published in more than 30 languages.
Also by Alex North
View all-
The Half Burnt House
A serial killer, a mysterious lost book, and a woman with one last chance to save her family—the chilling new thriller from the author of The Whisper Man. Katie always prided herself on being a responsible big sister—until she left her brother Chris alone for one selfish afternoon, and everything fell apart. Although he survived the attack, the scars ran...Paperback$2600Unit price /UnavailableAvailableShips in 4-6 weeks -
18% offThe Man Made of Smoke
You saw it. You were too scared to act. But now it's coming back for you... A terrifying new thriller from the internationally bestselling author of The Whisper Man. Dan Garvie can't move on from a thing he didn't do. He saw the boy. He knew he needed help. But he ran and hid - and a terrifying serial killer...Paperback$3100Usually:$3800Unit price /UnavailableIn StockShips today -
Dark Room
A dark and twisted early thriller from the dark master of suspense, Alex North For DI Andrew Hicks, solving a murder is logical- your first suspicions are usually right. So when the brutally beaten body of a young woman is found, Hicks immediately turns his attention to the most likely culprit - her possessive ex-husband. But when a second body...Paperback$2800Unit price /UnavailableAvailableShips in 4-6 weeks -
The Man Made of Smoke
You saw it. You were too scared to act. But now it's coming back for you... A terrifying new thriller from the internationally bestselling author of The Whisper Man Dan Garvie can't move on from a thing he didn't do. He saw the boy. He knew he needed help. But he ran and hid - and a terrifying serial killer...Paperback$2800Unit price /UnavailableAvailableShips in 4-6 weeks -
Black Flowers
A dark and twisted early thriller from the dark master of suspense, Alex North. When Neil Dawson's father commits suicide, he is devastated by the loss. But even through his grief, Neil knows something isn't right. Among his father's possessions, he finds a copy of an old novel, The Black Flower. Opening it will take Neil into an investigation full...Paperback$2800Unit price /UnavailableAvailableShips in 4-6 weeks -
The 50/50 Killer
A terrifying, twist-filled early novel from the dark master of the truly scary thriller, Alex North. The 50/50 Killer preys on couples. He manipulates their love for each other and makes them play a game. He stalks them, tortures them, and then forces them to choose. What is going to break first? Their will or their love for each other?...Paperback$2800Unit price /UnavailableAvailableShips in 4-6 weeks -
You Can Run
A dark and twisted early thriller from the dark master of suspense, Alex North. You Can Run Police called to a crime scene on a quiet suburban street are shocked to find a woman being held captive. You Can Hide When the remains of more victims are discovered, it seems that the notorious Red River Killer, who has been abducting...Paperback$2800Unit price /UnavailableAvailableShips in 4-6 weeks -
The Whisper Man
Gripping, moving and brilliantly creepy, this is an outstanding new psychological thriller. You'll hear the whispers. And then you'll hear the screams... Still devastated after the loss of his wife, Tom Kennedy and his young son Jake move to the sleepy village of Featherbank, looking for a fresh start. But Featherbank has a dark past. Fifteen years ago a twisted...PaperbackSold Out
More from Crime & Thriller
View all-
New ReleaseDying Days
Award-winning writer delivers a pulse-pounding espionage thriller. Missing soldiers, MI6 secrets and European partisans collide in a deadly game where the lines between lies and reality are fast disintegrating. In the dying days of the Second World War, a new conflict is about to ignite. May, 1945: After fighting to liberate Europe from the Nazis, Tito's Yugoslav Army and Allied...Paperback$3199Elsewhere:$3699Unit price /UnavailableIn StockShips today -
Buy to WinNew ReleaseThe Country Road Murders
From the Sunday Times bestselling author comes a pulse-pounding thriller about justice, vengeance and the roads that lead us home. No one gets this big without amazing natural storytelling talent - which is what Jim has, in spades — LEE CHILD Cross Rivers is the kind of small town where everyone knows your name – and your secrets. Silas Tucker...Paperback$3000Elsewhere:$3800Unit price /UnavailableIn StockShips today -
New ReleaseEvery Lake
Scary stories are fun... until your life becomes one. When Alice was fifteen, her father killed Mia Heywood in their lakefront cottage before vanishing into the trees. At least that's what the locals think happened. Over a decade later, Alice has lost her job as a journalist, she's going through an expensive divorce and she desperately needs to sell the...Paperback$3299Elsewhere:$3799Unit price /UnavailableIn StockShips today -
New Release
Nautilus
The follow-up to the bestselling novel The Turing Protocol. Nautilus is a machine with the astonishing power to send messages eight weeks back in time. Its users must follow a set of protocols established by its inventor, Alan Turing, including that it can only be used by a descendant of his family, and only to avert global disasters. But what...Paperback$2999Elsewhere:$3699Unit price /UnavailableIn StockShips today -
New Release
Cold River
The sensational new novel from the author of the bestselling thriller, The Creeper, winner of the Ned Kelly Award for Best Crime Fiction 2025. Deep in the mountains, secrets grow deadly... Detective Constable Sally White knows how easily hikers can go missing in Victoria's high country. But there's something about the disappearance of Louis Taylor, a young man lost up...Paperback$3000Elsewhere:$3800Unit price /UnavailableIn StockShips today -
Buy to WinNew Release
It Could Have Been Her
PREPARE TO BE HOOKED: The no. 1 Sunday Times and MULTI-million-copy bestselling author is back with a brand-new spine tingling thriller. It was the night she almost died. Jane Trevally, newly divorced and feeling a little lost, agrees to accompany a man she doesn't know to his house in the darkest corner of Hampstead Heath. She's offered a drink, goes in, and...Paperback$3000Elsewhere:$3800Unit price /UnavailableIn StockShips today -
Buy to Win26 Beauties
The twenty-sixth thrilling novel in the globally bestselling Women's Murder Club series. Beautiful young women are disappearing by the dozen. A celebration is cut short when a concerned father crashes Detective Inspector Lindsay Boxer's party. His daughter is missing - and she's not the only one. DI Lindsay Boxer has been tracking a chilling pattern: a Jane Doe washed ashore,...Paperback$3199Elsewhere:$3800Unit price /UnavailableIn StockShips today -
New Release
The Secrets We Hide
The stunning new North Falls thriller by the bestselling author of We Are All Guilty Here 'Quite simply, Karin Slaughter is the best of us' Dervla McTiernan Welcome back to North Falls -- a small town with big secrets. The house at 1601 Iris Drive looks like any other in the quiet, residential street. But rumours are rife about the Vickery...Paperback$3099Elsewhere:$3799Unit price /UnavailableIn StockShips today -
Buy to Win
The Parkwood Murders
They came for an escape, but can they escape a killer? Detective Nicola Bridge returns in another gripping and immersive mystery For its loyal guests, Parkwood Holiday Village in west Dorset is a haven- woodland walks, a tranquil lake, service around the clock. Until, just after midsummer, a body is found floating in the swimming pool. Detective Nicola Bridge, exhausted...Paperback$3000Elsewhere:$3800Unit price /UnavailableBackorderShips mid September -
13% offHope Rises
'BALDACCI IS STILL PEERLESS' - THE SUNDAY TIMES REVENGE IS A DISH BEST SERVED COLD . . . Walter Nash, working under the alias of Dillon Hope, is on the road to revenge after becoming an informant for the FBI against a global criminal operation headed up by Victoria Steers. Steers has ripped everything Nash held dear away from him....Paperback$2700Elsewhere:$3800Unit price /UnavailableIn StockShips today -
Slash
A year after a brutal shootout left her lover dead, ex-police sergeant Honey Chalmers is a hot mess, drinking too much and eating too little, working casual gigs for a shady firm of private investigators — while holding conversations with a ghost. A desperate father asks her to investigate his missing son — a double-murder suspect last seen during the...Paperback$3200Elsewhere:$3799Unit price /UnavailableIn StockShips today -
A River Red With Blood
The players call it the Game, and its aim is simple: to abduct and kill a stranger without getting caught. They're very good at it. They've been playing it for a long time. And they can keep playing as long as everyone sticks to the rules: No Killing Close to Home and No Killing Outside the Game. But those rules...Paperback$3199Elsewhere:$3799Unit price /UnavailableIn StockShips today
Why buy from us?
Book Hero is not a chain store or big box retailer. We're an independent 100% NZ-owned business on a mission to help more Kiwis rediscover a love of books and reading!
Service & Delivery
Our warehouse in Auckland holds over 100,000 books, toys, board games and puzzles in-stock so you're not waiting for your order to arrive from overseas.
Auckland Bookstore
We're primarily an online store, but for your convenience you can pick up your order for free from our bookstore, which is right next door to our warehouse in Hobsonville.
Our Gifting Service
Books make wonderful thoughtful gifts and we're here to help with gift-wrapping and cards. We can even send your gift directly to your loved one.
Crime & Thriller lists from the team
Explore our curated lists from our heroes to find your next read!
