A drama that zeros in on two disparate gal-pal crimefighters from Boston , assertive detective Jane Rizzoli (Angie Harmon) and steady medical examiner Maura Isles (Sasha Alexander). Hailing from very different economic backgrounds, the strong, competent women effectively work together to solve the city's most puzzling crimes. The emotional fifth season sees the team immediately face the death of Detective Frost (Lee Thompson Young), who they mourn throughout the season. A pregnant Jane continues to work, but ultimately puts her unborn child at risk. Maura continues her relationship search, even dating Frankie (Jordan Bridges) for a short time, but her struggles persist. Angela (Lorraine Bracco) hits the reset button and gives her a life a fresh start. Idara Victor joins the team as Nina Holiday, a crime-scene analyst and IT tech.