It aired on Fox in the United States and Canada on September 29, 2013, and is written by Anthony Blasucci and Mike Desilets and directed by John Holmquist.
The rumor of supposed treasure sparks a citywide search, turning the residents of Quahog against each other.
Splitting off, Meg and Chris head out as well as Stewie and Brian (Both took a Hot Air Balloon and didn't join the others).
At the island cemetery they locate the grave of Timmy Musket, where Peter fights with the others (including Chris) to get the treasure, resulting in Lois abandoning him.
Digging up Timmy Musket, they discover another clue inside the lid of the casket which leads them to Pawtucket.
Seeing a painting, Peter pries it off to discover a treasure chest that contains an expired Founding Fathers restaurant coupon.
Family Guy has been making that sort of self-referential joke for a while, but tonight's versions actually work pretty well, particularly when Peter uses his cutaway power in the treasure hunt by traveling via douchey promo for the Suzuki Samurai or cutting into the closed Drunken Clam.