S5, E3: As the team makes a significant breakthrough in the case, Rachel hopes that the killers will become sloppy without the meticulous preparation that characterised the early murders. When Janet's attempt to help her daughter Taisie results in a complaint, Rachel has no choice but to caution her friend, but Janet is starting to question the value of doing everything by the book. With Rachel's position as acting DI in jeopardy, both Scott and Bailey have important decisions to make about their futures.