
Perhaps their strikingly different personalities make the relationship between detective Jane Rizzoli and medical examiner Maura Isles so effective. Jane, the only female cop in Boston's homicide division, is tough, relentless and rarely lets her guard down, while the impeccably dressed Maura displays a sometimes icy temperament -- she is, after all, more comfortable among the dead than the living. Together, the best friends have forged a quirky and supportive relationship; they drop the protective shield in each other's company, and combine their expertise to solve Boston's most complex cases.

A serial killer claims to have clues about the murder of another prisoner; Frankie Jr. prepares to take the detectives exam.

Jane and Maura are brought into the world of Celtic writings by the murder of a rare bookseller; Maura prepares Jane to meet her new man; Angela's relationship with Cavanaugh changes.

A witness agrees to testify against a gang member after a community activist is gunned down; TV host Bill O'Reilly criticizes the police department.

The team tries to find a witness to the contract killing of a woman outside a nightclub; Jane puts herself in the line of fire.