If you like the Rivers of London series, The Dresden Files, The Netherweird Chronicles, The Vinyl Detectives, American Gods, The King's Watch, and the Crow Investigations, then this is for you.

The Order of the Black Sun, a cabal of evil magical practitioners created by Hitler's Nazi war machine, has stolen a book of secrets so powerful that it once resided in the Library of the Heavens, guarded by angels and far from the meddling hands of men.

The Order plans to use the power of the book to unleash a terrifying new weapon on the world, starting with London.

Only D.C.I, Judas Iscariot, head of Scotland Yard's secret occult magic division, known as the Black Museum, stands in their way.

He's about to embark on the fight of his long, long life, and he's going to need a very special team to help him win through.

Will the Captain of the Host, the all-powerful Archangel Michael, a crew of wronged werewolves, a 17th-century highwayman and his trusty steed, ghostly sailors and mariners, and an enigmatic Atlantean soldier stand by him to the bitter end?

He hopes they will, but nothing in Judas' life has ever been straightforward.

If he fails, the enemy will destroy everything he has been ordered to protect, and even if he does defeat the enemy, will it truly be enough to earn history's most famous betrayer the redemption he so desperately craves?

Everything is at stake and nothing is what it seems.

Will it be glory, death or something far worse?