Continuing a popular show tradition, Brian and Stewie respond to viewer mail. We meet a British version of the Griffins, Quahog is taken over by a famous comedian and we get to see the world from Stewie’s POV.

Then, Peter encourages Joe to have a one-night stand with his attractive new partner (Anna Kendrick, “Up in the Air”) in order to even the score with Bonnie (Jennifer Tilly) for her own indiscretions. But when Bonnie finds out and threatens divorce, Lois insists that Peter get them back together.

Meanwhile, Peter has another run-in with the angry chicken which makes for yet another epic fight in the all-new, special one-hour “Viewer Mail #2 / Internal Affairs” season finale episode of FAMILY GUY airing Sunday, May 20 (9:00-10:00 PM ET/PT) on FOX. (FG-919/20) (TV-14 D, L, S, V) 

Voice Cast: Seth MacFarlane as Peter Griffin, Stewie Griffin, Brian Griffin; Alex Borstein as Lois Griffin and Italian Mom; Seth Green as Chris Griffin; Mila Kunis as Meg; Mike Henry as Cleveland Brown. 

Guest Voice Cast: Anna Kendrick as Young Female Cop/Nora; Jennifer Tilly as Bonnie; Adam West as Mayor West; Ioan Gruffudd as Host/Prince Charles; Chris O’Dowd as Guard/Contestant #2; Cate Blanchett as Queen; Tom Hollander as Contestant #1/TV Announcer #1.

BOUNS CLIP: David vs. Goliath.  Ali vs. Frazier.  Sean Penn vs. Pararrazzi.  All pale in comparison to...GRIFFIN VS. CHICKEN.  Watch a preview of the Ultimate Chicken Fight-tacular from "Internal Affairs"