Halloween is already shaping up to be a treat for "Lucifer," as Fox has ordered an additional nine episodes of the supernatural drama, bringing its second season to a full 22.

Based on the DC Comics/Vertigo series, "Lucifer" centers on the former king of Hell, who grows dissatisfied by his role and abandons his throne for retirement in Los Angeles, where he opens a nightclub. When a murder occurs outside his business, feelings of empathy had long been dormant reawaken, and Lucifer begins to wonder if there is hope for his soul after all.

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“'Lucifer' continues to deliver, with great blasts of dark humor and ambitious storytelling," Fox Entertainment President David Madden said in a statement. "The show has turned out to be a true wicked pleasure, the perfect companion to 'Gotham,' and we couldn’t be more pleased to order these nine additional episodes."

The series stars Tom Ellis as Lucifer Morningstar and Lauren German as Chloe Decker, with Kevin Alejandro, D.B. Woodside, Lesley Ann-Brandt, Scarlett Estevez and Rachel Harris.

Airing Mondays at 9 p.m ET/PT on Fox, after "Gotham," "Lucifer's" second season has averaged 8 million total viewers across multiple platforms. That's up 105 percent compared to same-day viewing.