A suspicious suicide in Brokenwood Women's Prison leads Mike and the team to uncover a complex murder. And for Mike this one is personal — he knew the victim Corina Doyle from his days prior to Brokenwood.As Mike and the team investigate they're brought into contact with several familiar female convicts from the past: Trudy Neilson, Brenda White and Rayleen Hogg. They're all doing their time and all up to no good.And with Corina's passing new information surfaces about an old crime. A secret from her past that will answer a nagging question that Mike has carried for 8 years.However, for that secret to come out, Corina had to entrust it with someone and that someone wants Mike to do a deal.