We've been wondering about Maura's family. Looks like we may finally get to meet at least one elusive parent. According to TVLine.com:
Not only are we about to meet Rizzoli and Frankie’s kid brother, a 30ish screwup who’s fresh out of prison ... , but we’re about to be paid a visit by Isles’ mother, an art historian who’s so well put together she could make Helen Mirren seem inelegant by comparison.
Sounds like a promising episode or two, and, hopefully, we'll get some well thirsted after knowledge on what makes Maura Isles tick!