Shadow of the Serpent by David Ashton

...WHILE THE STREETS OF LONDON HAD SHERLOCK HOLMES, THE DARK ALLEYS OF EDINBURGH HAD INSPECTOR JAMES McLEVY | 'ASHTON IS THE DIRECT HEIR TO ROBERT LOUIS STEVENSON' actor Brian Cox | 'EXCELLENT' The Sherlock Holmes Society | 'DRIPPING WITH MELODRAMA AND DERRING-DO' Herald ELEGANT AND CONVINCING' The Times

1880, Edinburgh.
Election fever grips the city. But while the rich and educated argue about politics, in the dank wynds of the docks it's a struggle just to stay alive. When a prostitute is brutally murdered, disturbing memories from thirty years ago are stirred in Inspector McLevy who is soon lured into a murky world of politics, perversion and deception - and the shadow of the serpent.

BASED ON THE LONG-RUNNING BBC RADIO 4 McLEVY DRAMA SERIES

THE INSPECTOR MCLEVY SERIES
1 - Shadow of the Serpent
2 - Fall from Grace
3 - A Trick of the Light
4 - Nor Will He Sleep