Don't miss A Murder in Paris, the brand new twisty thriller from Matthew Blake, available to buy now

THE SMASH HIT NO.1 INTERNATIONAL BESTSELLER ~ A GUARDIAN and SUNDAY TIMES THRILLER OF THE MONTH ~ TV IN DEVELOPMENT WITH NETFLIX

IT’S THE CRIME OF THE CENTURY

Everyone knows the Anna O case.

Everyone knows it was Anna's fingerprints on the knife.

But no-one knows the secrets of her sleepwalking.

No-one knows whether she really meant to commit the murders that night.

As a trial nears, the mystery reawakens.

Is she innocent, or guilty?

For fans of Girl A and The Silent Patient, the story of ANNA O is your next obsession.

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READERS LOVE THE STORY OF ANNA O

★★★★★ ‘Best book of the year so far and will take some beating’

★★★★★ ‘Hooked me from the start and continues to haunt me. Brilliantly written and so many red herrings!’

★★★★★ ‘Absolutely riveting, I couldn't put it down’

★★★★★ ‘This was a rollercoaster read with some exciting twists and a killer ending’

★★★★★ ‘Addictive, brilliant and one I would definitely recommend’

★★★★★ ‘I loved this incredible fast-paced thriller’

★★★★★ ‘If you like The Silent Patient, this is the book for you.’