"The Intruders" premieres at 8 p.m. Aug. 23 on BBC America.

BBC America's new drama "The Intruders" suggests that humans can achieve life after death—but someone will pay the price for said immortality.

"You'll see that some will fight it. Sometimes it takes years when the older one doesn't want to give up," says Frank Shepherd (Robert Forster) in the new extended trailer for the 10-part series debuting 8 p.m. Aug. 23.

I'm not quite sure who Frank is, but he's speaking about the series' central conceit: Members of a secret society are trying to achieve immortality by taking over the bodies of other people.

The clip begins with a little girl saying, "Welcome back. You've been missed," suggesting that someone who died just got his or her new body. Based on Michael Marshall Smith's 2007 novel "The Intruders," the show stars John Simm as ex-cop Jack Whelan, who gets drawn into a consiparcy when his wife, Amy (Mira Sorvino), goes missing.

The cast also includes James Frain, Tory Kittles, Millie Brown and Forster.

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