The killer is revealed
‘Lonely Souls,’ Episode 207

In what is arguably the show’s strongest sequence, Leland-as-BOB violently kills Maddy, intercut with shots of various cast members who are getting psychic feelings that something terrible is happening, while the Giant (Carel Struycken) reappears to tell Cooper that “it is happening again.” It is incredibly disturbing, it is incredibly well directed, and is one of Ray Wise’s most incredible Twin Peaks performance moments.