In A House Of Lies by Ian Rankin

Six years ago private investigator Stuart Bloom went missing.  Despite an intensive search and investigation no clues emerged to his disappearance.  The police took a public relations hit as the case was a newsworthy one.  Bloom was involved in a dispute between two prominent wealthy men and there were those who suspected the men were pulling strings to cripple the investigation.  Bloom was gay and his partner's father was a murder investigator in another district and that brought its own publicity and calls of favoritism. 

Now, a car has been discovered in a forest and Bloom's body has been found in the trunk with the ankles handcuffed together.  The forest had belonged to one of the wealthy men, a filmmaker, and now belonged to the other who had bought it as the first man's influence waned and he had to sell assets.  Had it been there all along and the police just missed it?

Now the entire former police investigation is under scrutiny.  Most of the men involved are now retired but that doesn't stop the inquiry.  Inspector John Rebus was one of the men involved in the original investigation and he finds ways to insert himself into this one.  One of his mentees, Siobhan Clarke, is one the investigation and feeds him information.  Malcolm Fox, part of the unit who investigates police inquiries from the inside, is also forwarded over to the investigation.  Will the crime be solved and will careers be damaged due to the first investigation?

Ian Rankin is one of the foremost crime novelists working in Scotland today.  His books are models of police procedurals with strong characters who the reader learns to respect in various cases.  He has a knack for outlining the way that human nature will always insert itself between the police rules and regulations; there are always people who are looking to get ahead, those willing to use a case to pay back a slight or to curry favor with those who can do them good; those investigators who aren't giving their job their all due to personal situations or laziness or just incompetence.  He portrays the give and take of an investigation and the myriad levels of obligations and favors that the best policemen know how to manipulate to solve a crime.  This book is recommended for mystery readers.