Season 3's central mystery finally unfolded in what proved to be an especially stressful all-nighter.

Mercy is meant to be given freely, but not necessarily easily, as Don and the gang have begun to realize, and depending on where you stand, conflicting motivations can make mercy appear to be something different altogether.

Plus: Liv Tyler is headed to TV, John Hurt is gonna fight vampires, and Jennifer Love Hewitt is making unreasonable requests.

This week: John Oliver's not-so-warm Daily Show welcome, Apu announces the Dodgers, a crazy Friends diorama, and more.