Sasha Alexander, Angie Harmon Sasha Alexander, Angie Harmon

A lot will have happened when Rizzoli & Isles returns Tuesday — and that's just the way Sasha Alexander likes it.

In the Season 3 finale, Maura (Alexander) had a change of heart and offered to donate her kidney to her ill half-sister Cailin (Emilee Wallace) on the condition that her biological mother Hope (Sharon Lawrence) didn't tell her. When Season 4 (9/8c, TNT) picks up three months later, she will have done so.

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