Dark, with a focus on psychopathy, this is undoubtedly our favourite thriller of 2019. Shiver as Dr August Bloom is drawn into a chilling game with very high stakes. What sets this novel apart is the final reveal, which comes as a genuine shock, and will linger in your mind long after finishing the book.

Fabulous. Beautifully imagined, beautifully written, immediately immersive, and scary as can be.

If you like a proper, twisty nerve-wracking thriller, here's one for you!

With a scorching finale and a psychologist-cum-private detective to savour, this is the one to watch!

One of the best books to buy this Christmas!

The latest thriller you need to add to your reading list, especially for those who love nothing more than solving a mystery.

An interesting novel, pleasantly different from most crime fiction that deals with psychopathy.

Clever and well plotted, this is a true original that will stay with you long after it's chilling close.

A fascinating thriller with a unique concept that will immerse you from the get-go

The story contains more twists and turns than a fairground ride

A dark, brutal ride through the underbelly of LA

Masterpiece - that's the only way to describe Sins as Scarlet. Obregón's brilliant novel is, at once, a classic noir, a psychological thriller and a riveting examination-sometimes dark, sometime moving to the point of tears--of life in a less-than-angelic Los Angeles

Evocative, perceptive writing

This bleak, richly descriptive and haunting thriller walks of the wild side of Los Angeles

A brace of cutting-edge themes are threaded into the abrasive narrative . . . It is a combustible mix, but as in the earlier Blue Light Yokohama, the author has the full measure of his difficult material. With his vividly evoked Mexican and LA settings [he] delivers a pacey, page-turning thriller, but the underlying seriousness gives real texture. Iwata is a richly drawn, conflicted hero, and this is another savage journey into the dark heart of America

Obregón keeps the unpredictable plot of Sins As Scarlet churning with myriad surprises that are grounded in believability

Sets the bar high for every other thriller this year

Diabolically clever and propulsive as a rollercoaster. If you like twisty thrillers that leave you guessing till the very last page, this is a must-read

Another black fist of doom, smashing into the feeble world . . . loved it!

Such intricate and enthralling storytelling. Evocative and creepy

This book is chilling. It's the type of book you need to read with the lights on and the doors locked but it's so gripping you won't regret the mild night terrors

C. J. Tudor has crafted an intense novel that gets right to the heart of what it means to love and to grieve . . . Intriguing, dramatic and heartbreaking

A chilling psychological thriller, pulsing with atmosphere and plot twists

A well-crafted story that blends a mystery with some supernatural chills. You'll want to leave the light on

A chilling, atmospheric tale of justice, revenge, and the darkness lurking on the fringes of society

Vivid characterisation, lots of mystery as well as a twisting plot, it makes for a gripping page turner

The chilling new novel by the bestselling author of The Chalk Man is an absolute page-turner. We'll just say the author isn't referred to as the 'Queen of Creepy' for nothing

Complex thriller which is suffused with loss, longing and vengeance. Touches of the supernatural add to the spine-tingling thrills

A novel with a formidable emotional pull

C.J. Tudor is mastering the suspense/horror genre . . . It's quietly disconcerting, completely relatable and shows you that humans have a wonderfully dark side

Kidnap mystery and horror suspense all rolled into one as a man is haunted by his abduction of his daughter while the woman who knows what happened is on the run for her life

Praise for C. J. Tudor

CJ Tudor taps into those things that woke you up in the night when you were a kid and then stay with you when you're an adult

Britain's female Stephen King

Some writers have it, and some don't. C. J. Tudor has it big time

A dark star is born

An intense novel that gets right to the heart of what it means to love and grieve

Wonderfully gripping and doubt-inducing