Boston Keltic is the seventh episode of the fifth season of the show, Rizzoli & Isles.
The murder of a rare bookseller brings Jane and Maura into the world of Keltic writings and coded confessions, just as Maura is preparing Jane to meet her new man. Angela's relationship with Cavanaugh changes pace.
- 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
- Brendan Coughlin as Ricky Kelly
- Billy Smith as Father Cowens
- Nick Toren as McTavish
- Kim Thomson as Jillian
- Paul Perri as Attorney Walsh
- John Doman as Paddy Doyle
- Brian Goodman as L. Sean Cavanaugh
- Mike Bradecich as Officer Tobin
- Jaime Collaco as Officer Garcia
- Japheth Gordon as Officer Rogersby
- Kevin McCarthy as Donald Maxwell
- Sonny Surowiec as Tom Ramsey
- Ian Patrick Williams as Brendan McHale