PA: Viewer discretion is advised.

PETER TELLS ALL ON "FAMILY GUY" SUNDAY, JULY 23, ON FOX

When the Griffins get robbed, the family runs into Peter's panic room to escape the trespassers. Now isolated and trapped, Peter insists the family know about their ancestry and narrates a chain of events in world history that explain the Griffin name. Meanwhile, after Meg is chosen to go back into the house, she scares off the robbers in an unexpected way in the "Untitled Griffin Family History" episode of FAMILY GUY Sunday, July 23 (9:00-9:30 PM ET/PT) on FOX. (FG-430) (TV-14 D, L)

Voice Cast: Seth MacFarlane as Peter Griffin, Stewie Griffin, Brian Griffin, Quagmire, Black-Eye Griffin, God, Moses Griffin, Nate Griffin, Peter Hitler, Quagdingo and Southern Carter; Alex Borstein as Lois Griffin and Eva; Seth Green as Chris Griffin; Mila Kunis as Meg Griffin; Mike Henry as Cleveland and Cleveland, Jr.

Guest Voice Cast: Lori Alan as African Diane; Patrick Warburton as Joe; Chris Sheridan as Chugs; John Viener as Hitler; Phil Lamarr as Ollie Williams.