The squad is forced to join forces with an overeager private investigator when a successful clothing designer is found poisoned and his wife reported missing. Jane notices Angela is spending too much money and asks Maura to teach her mom how to handle her finances.
The owner of Mamaki Clothing is thrown from his business' balcony, but his death occurred before that. The offices reveal a burglary, in which only files are taken. Corporate espionage is the apparent motive. However, the owner's wife also goes missing, and the team finds themselves working with a private detective who had been caught snooping by the victim just before his death. Meanwhile, Maura cautions Angela about spending her new income, and Frankie asks Jane's help in focusing on his firing range test.
- Angie Harmon as Detective Jane Rizzoli
- Sasha Alexander as Dr. Maura Isles
- Jordan Bridges as Officer Frankie Rizzoli, Jr.
- Bruce McGill as Detective Vince Korsak
- Lorraine Bracco as Angela Rizzoli