Complex sentence: He releases her, but vacillates again and is last seen burying her body before returning to work for Frank Underwood as Chief of Staff after Remy Danton resigns, presumably jaded by the treatment Frank showed Jackie Sharp during the presidential debate.
Split into simpler sentences: He releases her, but vacillates again and is last seen burying her body. He returns to work as Frank Underwood's Chief of Staff after Remy Danton resigns, presumably jaded by the treatment Frank showed Jackie Sharp during the presidential debate.