WATCH: Sneak Peek of all-new AMERICAN DAD - "American Stepdad"

AMERICAN DAD: When Stan's mom (guest voice Swoosie Kurtz) and Roger fall in love and get married, Stan is forced to deal with Roger as his new stepdad in the all-new "American Stepdad" episode of AMERICAN DAD airing Sunday, Nov. 18 (9:30-10:00 PM) on FOX 50. AMERICAN DAD ™ and © 2012 TCFFC ALL RIGHTS RESERVED.

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By FOX50.com

Story Created: Nov 16, 2012 at 5:06 PM EDT

Story Updated: Nov 16, 2012 at 5:26 PM EDT

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Stan (Seth MacFarlane) invites his mother (guest voice Swoosie Kurtz) to come live with the family after Stan’s stepfather dies, and tensions rise when Roger (Seth MacFarlane) is forced to share his attic with her. But Roger and Stan’s mom quickly fall in love and get married, and Stan is forced to deal with Roger as his new stepdad.

Meanwhile, Steve (Scott Grimes) and his friends discover a mysterious plane crash while on a bike ride and come across a long-lost script of a “Fast and Furious” movie that they are determined to get made in the all-new “American Stepdad” episode of AMERICAN DAD airing Sunday, Nov. 18 (9:30-10:00 PM) on FOX 50. (DAD-710) (TV-14 D, L, S, V)

Voice Cast: Seth MacFarlane as Stan Smith and Roger the Alien; Wendy Schaal as Francine Smith; Rachael MacFarlane as Hayley; Scott Grimes as Steve; Dee Bradley Baker as Klaus; Jeff Fischer as Jeff.

Guest Voice: Swoozie Kurtz