It's Always Sunny in Philadelphia/Mac Kills His Dad
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Mac Kills His Dad is the seventh episode of the tenth season of It's Always Sunny in Philadelphia, and the one hundred eleventh episode overall.
Guest Starring: Lance Barber (Bill Ponderosa), Gregory Scott Cummins (Luther), Sandy Martin (Mrs. Mac), Catherine Reitman (Maureen Ponderosa), Lynne Marie Stewart (Bonnie), Cheryl Texiera (Jane Ponderosa), Jason Manuel Olazabal (Worker)
After Mac finds out his dad is in prison again for killing a man, he and Charlie try to prove his innocence. Meanwhile, the rest of the gang find Bill Ponderosa trying to literally drink himself to death.