Los Angeles (CNN) -- Showtime made it official Thursday that "Dexter's" eighth season will be its last one, while teasing fans with a video clip from June's season premiere. Les Moonves, president of Showtime's parent company CBS Corp., had already let it slip in an interview last month that the cable network was pulling the plug on the successful series. Season 8 debuts Sunday, June 30, the cable network said in a news release Thursday. The clip posted online "gives fans a sneak peek into the mindset of Dexter and Debra Morgan after LaGuerta's death in Season 7," Showtime's release said.
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Clip is "a sneak peek into the mindset of Dexter and Debra Morgan after LaGuerta's death"
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"I shot the wrong person in that trailer," Debra tells Dexter
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"'Dexter' redefined the genre" with its anti-hero, Showtime's chairman says
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Season 8 of "Dexter" debuts Sunday, June 30
"Dexter paved the way for the next generation of award-winning hit @placeholder series, and its cultural impact will be felt for years to come."