Having recently returned a kidnap victim safe and sound, the team is thrown on to the back foot when he is found murdered. The way the victim died suggests a local protection gang is to blame, but nailing the hard-nosed woman they believe is behind it proves challenging - witnesses know the price they will pay for talking to the police.

Banks and his team now have a murder enquiry on their hands, as the body found on the moors is identified as eleven-year old Andre Petri. With Kyle Heath still missing, Banks has to divide his team. Is there a connection between the death of Andre and the disappearance of Kyle?

Banks and the team begin the painful job of finding out exactly who was responsible for the tragedy that has changed all their lives forever, while dealing with the grief it has caused.

With David Hornby now a suspect in the case, Annie is forced to admit that the father of her baby doesn't know anything about her pregnancy. Banks tries to be supportive, but soon Annie finds juggling the affections of her boss and her former lover leads her to a difficult choice.

When the detective suffers a personal loss, he's forced to navigate a complex murder case while grieving. A young Estonian woman has been found dead, with the evidence suggesting she was buried alive. Piecing together her movements, the team uncovers a dark world of prostitution and drugs, and investigates her connection to a single father, his autistic son, and a family who seem to have silenced the town.

The officers are dismayed to learn the arson attack on the Osgoods' house has injured Michael and killed his son Robbie, and local bully Gary McCready is soon questioned. As the investigation into Katrin's murder continues, the body of an older man who died of natural causes is found buried near her grave, and when Banks suspects Jason McCready abducted missing Annika, he uncovers a shocking secret. Meanwhile, the detective gives a moving speech at...

What starts out as a missing person's case soon escalates into a kidnap and ransom - but when the perpetrators cleverly stay one step ahead of the police, it soon becomes clear that they aren't average criminals.

When the body of eminent lawyer Anaan Kamel is found washed up by an underground river, suspicion falls on Marcus Layton, a former employee of the victim's chambers. Text messages suggest an affair that had progressed to blackmail, but Banks and Morton struggle to find further information about Marcus. And when his corpse is found upstream in what looks to be a contract killing, the case becomes much more complicated.

Morton works hard to win back Banks's approval and discovers Hexton is the biological father of murdered student Josh. The team traces the former undercover police officer to Gerald and Elaine Foster's house, but it's too late - Hexton has kidnapped lap-dancer Melanie.

Having been thrust into a dark place from where it looks like there is no coming back, Banks' mission to solve Annie's murder is made all the harder by the fact he has been taken off the case and sent on gardening leave - but that won't stop him. While his old team struggle, Banks operates for the first time on the other side of the law, using his years of experience, wits and wisdom to secure the all-important break-through.