S04E01 - Answers Given to Questions Never Asked (2)

S04E02 - Pieces of Eight

S04E03 - Waking the Tyrant's Device

S04E04 - Double or Nothingness

S04E05 - Harper/Delete

S04E06 - Soon the Nearing Vortex (1)

S04E07 - The World Turns All Around Her (2)

S04E08 - Conduit to Destiny

S04E09 - Machinery of the Mind

S04E10 - Exalted Reason, Resplendent Daughter

S04E11 - The Torment, the Release

S04E12 - The Spider's Stratagem

S04E13 - The Warmth of an Invisible Light

S04E14 - The Others

S04E15 - Fear Burns Down to Ashes

S04E16 - Lost in a Space that Isn't There

S04E17 - Abridging the Devil's Divide

S04E18 - Trusting the Gordian Maze

S04E19 - A Symmetry of Imperfection

S04E20 - Time out of Mind

S04E21 - The Dissonant Interval (1)

S04E22 - The Dissonant Interval (2)