Perhaps their personalities that are different make the relationship between medical examiner Maura Isles and detective Jane Rizzoli powerful. While the richly dressed Maura exhibits a temperament that is icy, jane, the only real cop at Boston's homicide division, is tough, persistent and lets down her guard -- she is convenient among the dead than the living. Together, a supportive and unique relationship has been devised by the very best friends. They shed the protective defense in each other's company, and combine their own expertise.