You will watch The Simpsons Season 18 Episode 4 – Mona Leaves-a online for free episodes with high quality. Online episode guide, The Simpsons Season 18 Episode 4 – Mona Leaves-a.Mona Simpson returns, and says her days of activism are over. But when she unexpectedly passes away, Homer feels guilty for not expressing his love for her before her death. He decides to fulfill her wishes by scattering her ashes over Lake Wastershare at Springfield Monument Park.
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