Encyclopedia Griffin

"Encyclopedia Griffin" is the eleventh episode of the thirteenth season of, and the 242nd episode overall. It first aired on February 15, 2015.

Synopsis
"Peter, Quagmire, Joe and Cleveland form a neighborhood detective agency, and are stunned to discover that Chris is a thief. Meanwhile, Lois is worried about Chris' delusional relationship with his new girlfriend, but also sees it as an opportunity for Peter to copy Chris' romantic gestures."

- The Futon Critic