Fair warning: For a comedy, The Last Man on Earth's season finale is pretty morbid.

After Mike (Jason Sudeikis) skips town, it's up to Phil Tandy (Will Forte) to track down his apparently dying brother at their childhood home. Once reunited, Mike and Tandy immediately fall back into their habitual pranking routine. But nothing lasts forever, and soon reality barges in.

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The Season 2 finale is by far the most honest episode Last Man has ever given us, as the brothers are forced to confront Mike's illness and their complicated history together. But it's the reappearance of some Season 1 favorites that's really sure to get fans' waterworks going.

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