????? ‘Wow. I absolutely loved this book!... I was not able to put it down from the moment I started it, so much so that I devoured it in just two days.’ Goodreads reviewer Natasha Mayston wasn’t expecting anyone to knock on her door so late at night. And she has no idea that the face staring back at her is the last one she’ll ever see… As Detective Dan Lockhart is called to a wealthy London street to investigate Natasha’s death, he’s startled by the similarity to a previous case. Noticing the cable-tie restraints and the tiny scratches on Natasha’s wedding finger, Dan already knows what he will find if he looks in her mouth – the metal ball which choked her to death. He knows Natasha isn’t the killer’s first victim and is certain that he will strike again. Months earlier, Kim Hardy was found in the same position in a run-down hotel across the city – an identical silver ball in her throat. But Kim’s murderer was caught and sent to prison – did they arrest the wrong man? And what connects the two victims? Fearing that he’s dealing with a psychopathic serial killer, Dan calls in psychologist Dr Lexi Green to help him to get into the perpetrator’s mind. Tough and smart, Lexi will stop at nothing to hunt down the man responsible for the deaths.
Then, another body is discovered, just as Lexi finds a clue online leading to the killer. Dan’s team aren’t convinced, but in pushing Lexi away from the investigation, they force her to dig further into the case on her own. Convinced that she’s on to something, she puts herself in unthinkable danger… but can Dan piece together the clues and identify the killer before it’s too late?
Fans of Angela Marsons, Robert Dugoni and Cara Hunter will love this thrilling new series from Chris Merritt. From an explosive start to a heart-stopping finale, you will not want to put this book down! What readers are saying about Knock Knock: ‘Gripping from the get go… Impossible to put down once you start… The fact that I kept turning the pages, the adrenalin pumping, makes Knock Knock a compelling read.’ Goodreads reviewer, 5 stars
‘My heart beating so fast! I couldn’t believe what I was reading. It had me in shock. Every page, every chapter was a page turner… What a rollercoaster.’ Goodreads reviewer, 5 stars
‘Oh wow… I am a huge fan of this author’s work… These are the books that I love!... This book is just great, greater, the greatest!’ B for Bookreview, 5 stars
‘Loved the book. It’s edge of your seat reading.’ Goodreads reviewer
‘Wow! This is one of the best books I have read this year. Really incredible!’ Goodreads reviewer, 5 stars
‘Oh, this was good, very, very good… I was blown away… It’s one hell of a good thriller.’ Goodreads reviewer
‘I fell into this story and finished it in two days… A must read.’ Two Girls and a Book Obsession, 5 stars
‘My heart was in my mouth… I loved it.’ Goodreads reviewer, 5 stars
‘What a roller coaster!... Like OMG!... It’s so good.’ Goodreads reviewer, 5 stars
‘An absolutely gripping and fantastic read.’ NetGalley Reviewer, 5 stars
‘The ending is brilliant and full of suspense.’ Goodreads reviewer, 5 stars
‘I was completely immersed in the story, the suspense had my heart pounding at times. This is an unmissable and intense thriller.’ Goodreads reviewer, 5 stars
‘Tense and chilling with so many twist and turns.’ NetGalley reviewer
‘I literally couldn’t put it down.’ Book Lover, 5 stars
‘A fast-paced thriller with a jaw-dropping finale.’ Goodreads reviewer, 5 stars

If the past comes knocking, will you dare to answer?When Detective Chief Inspector John Shadow is called to Kirkdale Castle to investigate the death of a handsome racehorse trainer during a shooting party, he’s immersed in painful childhood memories. His father had been shot in the line of duty at Kirkdale, but his killer was never apprehended. Shadow suspects the two deaths may be linked and is determined to discover the truth, but dealing with the aristocracy is more complicated than he bargained for and the inhabitants of Kirkdale Castle are as unhelpful as ever.John Shadow is a man of contradictions. A solitary figure who notices the smallest detail about other people, but endeavours to avoid their company. A lover of good food, but whose fridge is almost always empty. Though he would prefer to work alone, he is assisted by his eager partner Sergeant Jimmy Chang.Can the men work together through the web of deceit and corruption to find the killer, clear an innocent man’s name, and solve the mystery clouding Shadow’s past?

The stakes don't get much higher than murder…It's January 1969 in the small rural community of Center Springs, Texas. Constable Ned Parker suspects a larger mystery behind the seemingly accidental death of his nephew, R .B., who was found in his overturned pickup near Sanders Creek bridge. It appears that R. B. drowned in the shallow water, but something doesn't add up for Ned, who begins turning over stones in search of what really happened the night R. B. died.The mystery leads Ned to the Starlite Club, a dangerous honky-tonk recently constructed in a no-man's land on the Lone Star side of the Red River. His investigations there uncover suspicious characters, drugs, and gambling, but even more troubling are a series of murders that seem designed to eliminate anyone who might know what really happened to R. B. on that cold January night.As he works his way through the cover-up, Ned lands himself in a high-stakes game of consequences with no good end in sight. Are the good citizens of Center Springs conspiring against Constable Parker in his search for the truth?In this thrilling addition to the historical Texas Red River Mystery Series, Constable Ned Parker bets big, but only time will tell if he'll win justice or a grave of his own.

Meet the brash and irresistible Bertha Cool and Donald Lam—the iconic detective duo who stars in this classic crime novel from the creator of Perry Mason.Hired by a mysterious “Mr. Smith” to find a woman who vanished 21 years earlier, Donald Lam finds himself facing a sadistic cop, a desperate showgirl, a duplicitous client, and one very dogged (and beautiful) newspaper reporter. Meanwhile, Bertha Cool’s attempts to cut herself in on this lucrative opportunity land them both hip-deep in murder . . . Erle Stanley Gardner was not just the creator of Perry Mason—at the time of his death, he was the best-selling American author of all time, with hundreds of millions of books in print. Among those books were the 29 cases of the brash, irresistible detective team of Bertha Cool and Donald Lam. Last year, Hard Case Crime brought out the first new Cool and Lam novel in decades, The Knife Slipped, lost for 77 years after Gardner’s publisher refused it. Now, we’re bringing you the book Gardner wrote to replace it, often considered the best in the series: Turn on the Heat.

USA TODAY BESTSELLER“This is a scary, thrilling, page-turning, race-against-the-clock novel if ever there was one, with a true shocker of an ending. Miss this one at your own peril.” —Blake Crouch, New York Times bestselling author of Dark MatterHow far would you go to save your child?Five years ago Elizabeth Piccioni’s husband was arrested for being a serial killer. Her life suddenly turned upside down, she did what she thought was best for her newborn baby: she took her son and ran away to start a new life.Now, living in a quiet part of the Midwest with a new identity, Elizabeth is ready to start over. But one day she receives a phone call from a person calling himself Cain. Cain somehow knows about her past life. He has abducted her son, and if Elizabeth wants to save him she must retrieve her husband’s trophies — the fingers he cut off each of his victims.With a deadline of one hundred hours, Elizabeth has no choice but to return to the life she once fled, where she will soon realize that everything she thought she knew is a lie, and what’s more shocking than Cain’s identity is the truth about her husband.*Includes an excerpt from Robert's thriller The Killing Room, winner of the 2024 ITW Thriller Award and the first book in a new series from Blackstone Publishing.