Book excerpt: For the very first time, famous associates of the Great Detective – clients, colleagues, and of course, villains – tell their own stories in this collection of brand-new adventures. Follow Inspector Lestrade as he and Sherlock Holmes pursue a killer to rival Jack the Ripper; sit with Mycroft Holmes as he solves a case from the comfort of the Diogenes Club; take a drink with Irene Adler and Dr Watson in a Parisian café; and join Colonel Sebastian Moran on the hunt for a supposedly mythical creature…