Bill James 
The Detective is Dead [EPUB ebook] 

When Oliphant Kenward Knapp’s drug-dealing empire comes up for grabs, there’s a rush to control his domain. Caught in the middle is Detective Chief Superintendent Colin Harpur who must protect his informant, Keith Vine, and his pregnant girlfriend. Unfortunately, his amoral superior Desmond Iles is determined to keep the couple in the midst of danger — as bait for the underworld villains. Can Harpur provide them with the protection they need? Especially when it becomes clear that Keith himself has resorted to murder?’An excellent and alarmingly realistic novel’ Independent