Simon Serrailler is back in the fifth installment of this extremely popular series.

Simon Serrailler has just wrapped up a particularly exhausting and difficult case for SIFT - Special Incident Flying Task force and is on a sabbatical couple of months on a far-flung Scottish island, Tallansay, walking, drawing, relaxing, and having a pleasant no-ties fling with the hotel barmaid, Kirsty.

He is called back just before his leave is due to end by Paula Devenish the Chief Constable, when two local prostitutes go missing and are subsequently found strangled. By the time he gets back, another girl has disappeared. So, a vendetta against prostitutes by someone with a warped mind? A series of killings by an angry punter? But then the wife of the new Dean of St Michael's Cathedral goes missing, followed by another respectable young married woman, on her way to the early shift at the print works.

Is this all the work of one serial killer? The murders all take place in and around the canal area, near the footbridge.