Scandi-noir fans are in for a treat. Knock Knock is a dark read - not for the lily-livered.

A masterpiece of a thriller. Brutal, gripping, intelligent. It left me breathless.

A tense and detailed thriller...The ending is a twist and a shocker.

[Grens is] an eccentric, alienated, socially inept hero worthy of comparison with Swedish mystery master Henning Mankell's Inspector Kurt Wallander.

A perfect example of Scandi noir

[A] complex, white-knuckle read

If you thrill to the chills of Scandinavian noir, chances are you've read something by Anders Roslund. Roslund has two strong prose styles - dark and darker - and both are on show in Knock Knock.

Anders Roslund is a household name throughout most of the world as a master of crime fiction, and this book is a sterling example of why.

From the first Knock Knock on the door of a murder scene to discovering the killers behind it, this novel is a breathless, suspenseful read...A heart-pounding thriller... Roslund's serpentine plot and visceral character development brings each cliffhanging chapter to a staggering revelation on how tasty a dish of cold, karmic revenge can be.

Breathtaking and terrific...Knock Knock is one of the best crime novels this reviewer has read in a very long time.

Heart-pounding...This terrific mash-up of police procedural and crime thriller has strongly imagined characters, explosive action, and a twisty plot with an unexpected conclusion. It's a must for Scandinavian noir fans.

Grens is an immensely compelling character whose sharp intuition and dedication to justice are reminiscent of Harry Bosch... a tense, sophisticated procedural

One of this year’s very best crime novels, that will keep even the most well-read and quality-conscious crime readers in a breathtaking iron grip from beginning to end.

An edge of your seat thriller about revenge and treachery during three fateful days.

Has punchy prose and plot twists that readers expecting another brooding Scandinavian noir won't see coming

With a novel like this in your hands the desire to read becomes extraordinary; everything else turns into distractions that keep you from lustfully devouring the next page.

Knock Knock is […] a breathtakingly thrilling, heartbreaking story of unscrupulous arms trading, shootings, and all their underlying causes.

Roslund’s crime novel is of the sweaty, action-packed kind, and you read it with a pounding pulse and constant sense of unease. At the same time, it is a gripping and smart plot to consume and ponder.

A taut and twisty domestic thriller that throws readers into the nightmarish situation of a missing child and the subsequent paranoia that creates suspects out of anyone and everyone. The unexpected twist will have your jaw to the floor.

An intensely twisty thriller guaranteed to keep you guessing until the very end - perfect for weekend reading.

A suspense builder - shocking lies and unforgivable betrayals emerge as a desperate search for a child ensues.

Secrets are uncovered at every twist and turn of this domestic thriller, in which you're thrust into the action from the very first page. A gripping, intricately written story that's easy to devour.

Sharp, sophisticated, and full of suspense - everything you need for a perfect summer read.

All Her Fault is a brilliant premise, wonderfully executed . . . a taut, superbly designed suspense novel.

This book is excellent. Pacy and clever and intriguing.

All my greatest fears on the page and yet I couldn't stop reading. Congratulations, Andrea Mara, you evil genius.

Someone has taken Marissa's child; the fun in this fiendishly twisting narrative is trying to work out who that might be.

This is a book which would probably reward a second reading, perhaps a few months later, when the details have faded a little from memory. It's really that good.

Gripping, cleverly-constructed, and heart-wrenching. Truly original

Intelligent. Compulsive. Heart-wrenching. Unforgettable

Brilliantly written

A thrilling mystery with a strong emotional heart

Ingeniously constructed, with real flesh-and-blood characters and cliff-hanging suspense