The Insider.com

Between murders and the mayhem said murders have caused, Dexter has bid adieu to many a co-star over the show's six seasons -- but during the upcoming seventh season, something nearly unprecedented is happening: someone's actually coming back!

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VIDEO - First Trailer For Dexter Season 7

Christina Robinson, who plays Astor Bennett, was snapped filming beach scenes with Michael C. Hall as he helps Harrison build a sandcastle (Astor's brother Cody is M.I.A. from the family reunion). The last time anyone saw Astor was in season five after she drunkenly reappeared at the home Dexter shared with her recently deceased mother, Rita. But after helping out his step-daughter's friend, Astor gave up the booze -- and the bitching -- seemingly becoming a loving member of The Morgan Family.

Will Astor still be playing for Team Dexter in season seven? Tune in to the premiere, September 30 at 9 p.m. on Showtime, to find out!