Sherlock Holmes is dead.

Days after Holmes and his arch-enemy Moriarty fall to their doom at the Reichenbach Falls, Pinkerton agent Frederick Chase arrives in Europe from New York. The death of Moriarty has created a poisonous vacuum which has been swiftly filled by a fiendish new criminal mastermind who has risen to take his place.

Ably assisted by Inspector Athelney Jones of Scotland Yard, a devoted student of Holmes' methods of investigation and deduction, Frederick Chase must forge a path through the darkest corners of the capital to shine light on this shadowy figure, a man much feared but seldom seen, a man determined to engulf London in a tide of murder and menace.

Author of the global bestseller The House of Silk, Anthony Horowitz once more breathes life into the world created by Sir Arthur Conan Doyle. With pitch-perfect characterisation and breath-taking pace, Horowitz weaves a relentlessly thrilling tale which teases and delights with the turn of each page.

Moriarty will be published in hardback, ebook and audio on Thursday 23rd October 2014.

Read the brilliant first chapter of the book before release.

What People Said About Anthony Horowitz’s The House of Silk

Enthusiastically replicating the spirit, style, suspense and atmosphere of Conan Doyle's stories, this skilfully crafted homage is an irresistible read. — SUNDAY TIMES, Peter Kemp

Horowitz has captured Holmes Heaven. — THE TIMES

An exciting, well-crafted novel. — SUNDAY TELEGRAPH, Andrew Lycett

Bravo, then, Mr Horowitz. Let us hope that the famous dispatch box contains many more cases for him to unearth. — FINANCIAL TIMES

Horowitz plays a perfectly straight bat. This is a no-shit Sherlock. — GUARDIAN

Brimming with informed enthusiasm, this skilfully crafted homage to Conan Doyle is so enjoyable that you're sorry when it fades away to the strains of Holmes playing his Stradivarius. — SUNDAY TIMES

Anthony Horowitz's new Sherlock Holmes novel The House of Silk is superb - indeed, I would say it is better than any of Conan Doyle's own Holmes novels, which always feel padded out in comparison with the gripping short stories. — DAILY TELEGRAPH

It's very good; dare I say as good as the original? — LITERARY REVIEW

It seems improbable, if not impossible, but it's true! Holmes is back at his best. — INDEPENDENT ON SUNDAY

23rd October – #IsawMoriarty carriage tour

To celebrate the release of Moriarty, Anthony Horowitz is touring London by horse and carriage. Travelling past some of London's most famous landmarks, he'll be stopping at seven branches of Waterstones, ending at Waterstones Piccadilly for his launch event, Murder, Mayhem and Moriarty.

Visit the Orion Books website to find more events and to join Anthony on his Moriarty tour of the UK.