A young women is discovered on the beach dead, however Maura discovers that there was no sea water in her lungs. Turns out the victim was investigating a drug ring at her school. Jane is forced to reunite with one of her colleague from her past in the drug unit. She holds resentment towards him for a case gone bad almost a decade ago. Maura is shocked to learn that her mother, Hope, used her fathers illegal money to open her clinics. When they attempt to have Paddy testify for Hope to be left alone, he refuses.