NEW YORK, Aug. 2 (UPI) -- Garret Dillahunt, Summer Glau, Alaina Huffman, Rebecca Mader and Brent Spiner have signed up for guest spots on the new U.S. series "Alphas," Syfy said.
Lindsay Wagner and Peter Wingfield are also set to appear this summer on the series, along with previously announced recurring guest star Valerie Cruz.
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