Suranne Jones and Lesley Sharp return in Sally Wainwright's drama exploring the personal and professional lives of two female detectives – Rachel Bailey and Janet Scott.
After the murder of Rachel's ex-boyfriend Nick Savage in series two, series three reveals how Rachel finally managed to prove she was innocent and keep her job. She's now married to new boyfriend Sean, but did she go through with the wedding for the right reasons?
Meanwhile, Janet fails to patch things up with husband Adrian and they decide to divorce.
And for the first time, this series follows one crime story across all eight episodes, with Nicola Walker starring in a tale of murder and deception that pushes Scott and Bailey to their limits.