Out of bounds by val mcdermind

Val McDermid’s 30th novel, Out of Bounds is the fourth to feature DCI Karen Pirie, head of Police Scotland’s historic cases unit. When a teenage joyrider ends up in a coma, a routine DNA test reveals a close familial match to the perpetrator of an unsolved murder that took place in 1996. Discovering the killer’s identity should be a fairly easy task, but, the boy being adopted, Pirie and her sidekick, the doltish but earnest DC Jason Murray, find themselves in a maze of red tape. Pirie, who is struggling to come to terms with the death of her partner, also becomes involved unofficially in the case of Gabriel Abbott, a lonely obsessive who has been found shot dead. DI Alan Noble, in charge of the case, believes it’s suicide, but Pirie thinks there might be a link with the death of Abbott’s mother, 22 years earlier, in a presumed terrorist attack. McDermid’s expertly juggled plotlines and masterful handling of pace and tension tick all the best boxes, but what makes this book a real cracker is Pirie herself – grieving, insubordinate and dogged in her pursuit of the various culprits.

To say when I started this book I was struggling to get into it as I think I had a book hangover from my previous book and I love  val's books so I couldn't understand why I struggled but I am enjoying it thou. 
This started with a load of young lads drinking and thinking they are big hard guys who needs to go steal a car only for it to end in disaster but then the police find out one lads d.n.a makes to a historical rape and murder dating back 20 years and the lad is still critical in hospital so it's just a matter of sitting and waiting for him to regain consciousness and for the historical crime team to find all the evidence from the rape and murder to help with finding the murderer 

https://www.amazon.co.uk/Out-Bounds-Val-McDermid-ebook/dp/B010RGSE5Y/ref=sr_1_1?s=digital-text&ie=UTF8&qid=1480863238&sr=1-1&keywords=out+of+bounds

I'm now listening to this on audible which I really prefer than actually reading the book cos I really struggled getting into the book when I was reading it. I actually preferred to listen to the book instead of reading it myself I got that lost in it that I nearly got myself run over as I listen to it while I'm out walking.