The X-files: The complete fourth season

Disc 1: Herrenvolk / written by Chris Carter ; directed by R.W. Goodwin

Home / written by Glen Morgan & James Wong ; directed by Kim Manners

Teliko / written by Howard Gordon ; directed by James Charleston

Unruhe / written by Vince Gilligan ; directed by Rob Bowman.

Disc 2: The field where I died / written by Glen Morgan & James Wong ; directed by Rob Bowman

Sanguinarium / written by Valerie Mayhew & Vivian Mayhew ; directed by Kim Manners

Musings of a cigarette-smoking man / written by Glen Morgan ; directed by James Wong

Tunguska / written by Chris Carter & Frank Spotnitz ; directed by Kim Manners.

Disc 3: Terma / written by Frank Spotnitz & Chris Carter ; directed by Rob Bowman

Paper hearts / written by Vince Gilligan ; directed by Rob Bowman

El mundo gira / written by John Shiban ; directed by Tucker Gates

Leonard Betts / written by Vince Gilligan, John Shiban, Frank Spotnitz ; directed by Kim Manners.

Disc 4: Never again / written by Glen Morgan & James Wong ; directed by Rob Bowman

Memento mori / written by Chris Carter, Vince Gilligan, John Shiban, Frank Spotnitz ; directed by Rob Bowman

Kaddish / written by Howard Gordon ; directed by Kim Manners

Unrequited / teleplay by Howard Gordon & Chris Carter ; story by Howard Gordon ; directed by Michael Lange.

Disc 5: Tempus fugit / written by Chris Carter & Frank Spotnitz ; directed by Rob Bowman

Max / written by Chris Carter & Frank Spotnitz ; directed by Kim Manners

Synchrony / written by Howard Gordon & David Greenwalt ; directed by James Charleston

Small potatoes / written by Vince Gilligan ; directed by Cliff Bole.

Disc 6: Zero-sum / written by Howard Gordon & Frank Spotnitz ; directed by Kim Manners

Elegy / written by John Shiban ; directed by James Charleston

Demons / written by R.W. Goodwin ; directed by Kim Manners

Gethsemane / written by Chris Carter ; directed by R.W. Goodwin.