A couple of years ago Harvey Wratten and his nephew Jay Wratten were imprisoned. After serving only two years of their sentances they were given a Royal pardon but just a few hours into their freedom Harvey is murdered. DI Gabriel begins to investigate the murder with his partner DS Honey. Joseph Bede, who worked for Wratten, is determined to find out who killed Wratten, and also is trying to find Glickman, their money man. Bede sends his men on a mission to locate Glickman, and also the driver who collected Wratten from prison, Andy Dixon who has now disappeared.
Gabriel believes that Wratten must have known his killer because he opened the window to talk to him, and he shares his theory with DS Patterson. DS Honey manages to discover the identity of the driver of Wratten's car, who is Andy Dixon. After Gabriel goes to Dixon's house he is beaten there by Gatehouse, a scarey, shadowy figure. Gatehouse informs Dixon's girlfriend, Sara, that nobody can be trusted and to get Andy to contact him. Bede goes to see Babur with an idea for a new drugs deal. After Andy finally comes out into the open, he is involved in a chase with Gabriel, Honey and Jay Wratten all trying to get to him. After Andy contacts his mother she lets Gatehouse know.
Andy Dixon meets with Jay Wratten after following Gatehouse's orders. Jay informs Bede that Bob Harris was responsible for Wratten's murder. There are dire consequences after Andy returns home and Gatehouse shows up. DS Honey discovers that the cops think Gabriel is a thief. Patterson ends up agreeing that Gabriel can still investigate the Wratten case. At Harvey Wratten's funeral an unknown man shows up and ends up being followed by Honey. Bede wants to do business with Harris. After Honey follows Gabriel, she witnesses him show up at a house to be greeted by a woman and a child.
Ratallack ends up being picked up by drug baron Harris as Gatehouse watches on. Beatty is still working on Wratten's case and shows DI Gabriel the files. McGovern believes that there is more to the Wratten case and pays a visit to retired Police Commander Penney. Harris meets Bede and ends their deal. Gabriel believes that Andy Dixon was helped and on CCTV footage he sees that Dixon was with a man in a trilby hat. Stephen ends up confessing that he was working for Harris and selling the drugs to Wratten. Gatehouse ends up playing an evil game with Frieda and the baby. Gatehouse traces a call that Leonard makes to his father.
When Lessins visits a clock shop in Dublin he believes that he recognises the owner, Donnelly, as his old business acquaintance Peter Glickman. Gatehouse also pays a visit to "Donnelly's" shop where Glickman is waiting for him and they end up in a showdown. Gabriel and Laura are at the hospital having a scan on the baby. Whilst there Gabriel gets a call from Glickman, who tells him to "follow the drugs". After Gabriel does, he and Honey find out that Delaney had stolen coded drugs from the evidence room. DS Patterson and Police Commander Khokar learn from Gabriel what he now knows about Delaney. Ratallack ends up going to Bede now wanting to buy the drugs.
DI Gabriel learns from his consultant that his memory is starting to return. Gabriel meets up with Glickman, who tells him to follow the money and "Counterpoint". Gatehouse ends up making a deal with Ratallack and informs him that he's now part of the game. Bede meets with Babur and opens the drugs line and the deal is on. Commissioner Penney is asked questions by Gabriel about "Counterpoint". Penney ends up warning him that the last person who came to him asking similar questions ended up dead. Gabriel goes to see Alison and young son and begs her to go into hiding. Gatehouse ends up showing up with Glickman just behind him.
Gatehouse ends up showing himself to be the master puppeteer. Gabriel warns Khokar that Gatehouse will now be after him. As the drugs deal gathers pace, Gatehouse and Ratallack meet up while Bede continues his deal with Babur and Ratallack. Gabriel manages to find Penney on his sail boat, who reveals the truth about "Counterpoint". He informs him that Gatehouse will now kill all the old players and start the game afresh. Julie's health gets worse and Bede is beside himself with grief as Jay Wratten shows up. Patterson learns from Gabriel that he wants to prosecute Commissioner Khokar. Gabriel ends up getting a call from Gatehouse and agrees to meet with him.