Sherlock tells them he’s not mad – but who’d believe a lunatic? There’s only one option: he has to escape – and then use all his rational powers to work out who put him there in the first place . . .

    As they playfully recreate the ritual of the Black Dudley Dagger, someone dies. Pathologist George Abbershaw suspects foul play, and when a vital item is mislaid, a gang of crooks hold the guests hostage. Will they escape the house – what did happen to the Colonel – and just who is the mysterious Mr Campion? Neither the story nor Albert Campion is quite as vapid and slow as you might expect....apa in US as THE BLACK DUDLEY MURDER, 1929

    Reprint.

    So one more death shouldn't be a surprise. But then a body turns up with bizarre injuries, and Sherlock Holmes' former sidekick Dr John Watson - unable to fight for his country due to injury but able to serve it through his medical expertise - finds his suspicions raised. The face has a blue-ish tinge, the jaw is clamped shut in a terrible rictus and the eyes are almost popping out of his head, as if the man had seen unimaginable horror. Something is terribly wrong.But this is just the beginning. Soon more bodies appear, and Watson must discover who is the killer in the trenches. Who can he trust? Who is the enemy? And can he find the perpetrator before he kills again?Surrounded by unimaginable carnage, amidst a conflict that's ripping the world apart, Watson must for once step out of the shadows and into the limelight if he's to solve the mystery behind the inexplicable deaths.