'A bookshop is a first-rate place for unobtrusive observation,' he continued. 'One can remain in it an indefinite time, dipping into one book after another, all over the place.' Mr Richard Dodsley, owner of a fine second-hand bookshop on Charing Cross Road, has been found murdered in the cold hours of the morning. Shot in his own office, few clues remain besides three cigarette ends, two spent matches and a few books on the shelves which have been rearranged. In an investigation spanning the second-hand bookshops of London and the Houses of Parliament (since an MP's new crime novel Death at the Desk appears to have some bearing on the case), Ferguson's series sleuth MacNab is at hand to assist Scotland Yard in an atmospheric and ingenious fair-play bibliomystery.

From the author of Looker comes this razor-sharp suspense about two librarians whose lives become dangerously intertwined.

No one knows Margo's real name. Her colleagues and patrons at a small-town public library only know her middle-aged normalcy, congeniality and charm. They have no reason to suspect that she is, in fact, a former nurse with a trail of countless premature deaths in her wake. She has turned a new page, so to speak, and the library is her sanctuary, a place to quell old urges.

That is, at least, until Patricia, a recent graduate and failed novelist, joins the library staff. Patricia quickly notices Margo's subtly sinister edge and watches her carefully. When a patron's death in the library bathroom offers a hint of Margo's mysterious past, Patricia can't resist digging deeper - even as this new fixation becomes all-consuming.

Taut and compelling, How Can I Help You explores the dark side of human nature and the dangerous pull of artistic obsession.