Hope comes to Maura with an apology and to ask a favor while Jane worries about Casey's upcoming spinal surgery. Tommy shows off baby T.J. but is soon overshadowed when a building collapses and traps loved ones inside.
Jane and Maura work to track down the killer of a man stabbed during his alma mater's car wash fundraiser. Surprising news brings Frost's mother to town and Casey bumps into Jane.
When a microbrewer is murdered, the virtual world and real world meet head-on. Jane and the rest of the team mentor underprivileged teenagers. Angela starts a new romance.
The team investigates when a suicide may not be how it appears. Frost decides to review an old murder case. Angela's new romance isn't a secret anymore.
When a man dies from poisoning after eating breakfast in the Division 1 Cafe, Jane and the team search for the source. Korsak meets up with one of his ex-wives. Tommy wants proof that he's the biological father when Lydia returns to take back the baby.
Jane and Maura investigate the death of a woman who is found inside a statue. The squad gets a new homicide detective. After disappearing from Boston, Dennis returns to woo Maura back. Lydia goes into labor.
A boy band star that Jane and Frankie grew up with returns for a show and ends up murdered. Jane and Maura try to figure out whether it's time to tell Angela the truth about Lydia's pregnancy, especially since Angela is planning to throw a baby shower.
The latest investigation for the detectives involves a bride who was murdered immediately preceding her nuptials. Angela, Frankie and Frost focus their attention on Jane's new neighbor.
The detectives investigate the murder of two psychiatrists who were also husband and wife. A medical examiner attending a seminar offers to help Jane and Maura. A pregnant stranger may have something in common with the Rizzoli family.
Jane and Maura are called upon to investigate the death of a financier found jammed into a trashcan. Maura makes a more meaningful connection with Dr. Hope Davis and her half-sister.
Jane attempts to find a way for Maura to meet her biological mother, Dr. Hope Martin. Angela becomes involved in a political campaign. A nun from Jane and Frankie Jr.'s past returns.
Jane and Maura are faced with a puzzle when the bodies of young professional woman dressed as dolls are being found on the public transit system. Angela has some new ideas for the café. Jane learns about Casey's injury.
An unusual meeting with a guy named Dennis shows Maura in a new light. Jane has mixed emotions when Casey returns.
Everyone is caught in the middle between Jane and Maura as tensions rise, but when a college student dies they put aside their feelings to work together. Angela gets upsetting news from Frankie Sr.
Since the shooting of Paddy Doyle, Jane and Maura's friendship has become strained. Internal Affairs is investigating and Jane's relationship with Agent Dean comes to light.