: The episode ends on a major cliffhanger implying that Frank may actually be Charlie’s biological father , following a one-night stand with Charlie's mother, Bonnie, thirty years prior.
: Bruce (originally played by Stephen Collins) is depicted as a wealthy, philanthropic doctor and the moral antithesis of the Reynolds family. [S2E10] Dennis and Dee Get a New Dad
: After being contacted on MySpace, Dennis and Dee discover that their mother, Barbara, had an affair with a man named Bruce Mathis . This confirms that Frank Reynolds is not their biological father—a fact that causes Frank to have a minor stroke in a restaurant. : The episode ends on a major cliffhanger
: Mac and Charlie attempt to impress Mac’s imprisoned father, Luther McDonald , by trying to become hardened criminals. This leads to the infamous and absurd plotline where Luther asks them to smuggle heroin into prison via their rectums. This confirms that Frank Reynolds is not their
" Dennis and Dee Get a New Dad " is the tenth and final episode of Season 2 of It's Always Sunny in Philadelphia , notable for fundamentally shifting the Reynolds family dynamics and introducing key recurring characters. Key Plot Developments