'The Simpsons' Returns with Kiefer Sutherland

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Kiefer Sutherland becomes a part of The Simpsons' family during his guest spot on tonight's season premiere, but he's not your ideal houseguest.

In the episode, Kiefer voices the character of Wayne, an ex-CIA agent who's been hired as a security guard at the nuclear power plant. When Homer befriends Wayne, he and the entire neighborhood learn about Wayne's tortured past as the former spy talks in his sleep.

Watch the clip to hear Wayne unwittingly narrate his revealing nightmares for all of Springfield. And be sure to tune in for The Simpsons' 23rd season premiere tonight at 8 p.m. ET/PT on FOX.