Wayne Knight, C. Thomas Howell and Ernie Hudson have signed on as guest stars for the upcoming U.S. edition of "Torchwood," Starz said Tuesday.

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Other guest stars lined up to appear on the science-fiction drama are Nana Visitor, John DeLancie, Mare Winningham and Frances Fisher.

Produced by BBC Worldwide Productions, BBC Cymru Wales and BBC Worldwide, the 10-episode "Torchwood: Miracle Day" is to premiere on the U.S. cable network July 8. It is about what happens when people stop dying around the world.

"Miracle Day" stars "Torchwood" alumni John Barrowman, Eve Myles and Kai Owen, as well as "Torchwood" newcomers Mekhi Phifer, Bill Pullman, Alexa Havins, Arlene Tur and Lauren Ambrose.

The show's original creator, writer/producer Russell T. Davies, serves as executive producer along with BBC Worldwide Productions' Senior Vice President Julie Gardner, with Davies also serving as show-runner for "Torchwood: Miracle Day."

Set in Cardiff, Wales, "Torchwood" ran for two seasons, then was followed by the miniseries "Torchwood: Children of Earth." The previous incarnations aired on the BBC and BBC America.

"Miracle Day" will be the first installment to take place in the United States and debut on Starz.