<p>Mary Russell is well used to dark secrets - her own, and those of her famous<br><br>partner and husband, Sherlock Holmes. Trust is a thing slowly given, but over<br><br>the course of a decade together, the two have forged an indissoluble bond. But<br><br>what of the other person Mary Russell has opened her heart to, that third<br><br>member of the Holmes household: Mrs Hudson? Blood on the floor, a token on<br><br>the mantelpiece, the smell of...