Toby Logan is faced with a hostile colleague from the past in Detective Sergeant Becker, and eventually come into conflict with the goals and procedures of the Integrated Investigative Bureau (IIB). Meanwhile, Michelle is determined to have it all, working to balance her demanding career and the challenges of first-time parenthood with husband Adam. And Toby’s best friend, Oz Bey, embarks on a second career and new professional adventure when he decides to open a swanky gastro-pub.