Marlo Brooks

Returning home from a luncheon, Hercule Poirot is met at his door by an imperious woman who introduces herself as Sylvia Rule. "How dare you? How dare you send me such a letter?" Ignoring his denials, Mrs. Rule insists she received a missive claiming he had proof she murdered a man named Barnabas Pandy and advising her to confess her crime to the police. Threatening the perplexed Poirot with a lawsuit, she leaves in a huff.

A woman awakes in the morning to find that someone has picked her apartment’s supposedly impregnable door lock and rearranged personal items, even sitting beside her while she slept. The intrusion, the police learn, is a message to the entire city of carnage to come. Lincoln Rhyme and Amelia Sachs are brought in to investigate and soon learn that the sociopathic intruder, who calls himself "the Locksmith”, can break through any lock or security system ever devised.

London, 1893: High up in a house on a dark, snowy night, a lone seamstress stands by a window. So begins the swirling, serpentine world of Paraic O'Donnell's Victorian-inspired mystery, the story of a city cloaked in shadow but burning with questions: Why does the seamstress choose to jump out of that window? Why is there a cryptic message sewn into her skin? And how is she connected to a rash of missing girls, all of whom seem to have disappeared under similar circumstances?

Inspector Treadles, Charlotte Holmes’ friend and collaborator, has been found locked in a room with two dead men, both of whom worked with his wife at the great manufacturing enterprise she has recently inherited. Rumors fly. Had Inspector Treadles killed the men because they had opposed his wife’s initiatives at every turn? Had he killed in a fit of jealous rage because he suspected Mrs. Treadles of harboring deeper feelings for one of the men? To make matters worse, he refuses to speak on his own behalf, despite the overwhelming evidence against him.