About It's Always Sunny in Philadelphia Season 4, Episode 6 : Mac and Charlie Die Part 2

Frank, Dee and Dennis find unique ways of dealing with the loss of Mac and Charlie. The guys faked their deaths to avoid Mac's vengeance-obsessed father (Gregory Scott Cummins), who was released from prison. Guest Stars: Lynne Marie Stewart, Mary Elizabeth Ellis, Keir O'Donnell, Sandy Martin, Georgia McGreggor, Nicole Marie White, Atticus Todd, Gregory Scott Cummins,