4x01 "Scorpion - Part II"
[Skorpion - Part 2]

4x02 "The Gift"
[Die Gabe]

4x03 "Day of Honor"
[Tag der Ehre]

4x04 "Nemesis"
[Nemesis]

4x05 "Revulsion"
[Der Isomorph]

4x06 "The Raven"
[Der schwarze Vogel]

4x07 "Scientific Method"
[Verwerfliche Experimente]

4x08 "Year of Hell - Part I"
[Ein Jahr Hölle - Teil 1]

4x09 "Year of Hell - Part II"
[Ein Jahr Hölle - Teil 2]

4x10 "Random Thoughts"
[Gewalttätige Gedanken]

4x11 "Concerning Flight"
[Apropos Fliegen]

4x12 "Mortal Coil"
[Leben nach dem Tod]

4x13 "Waking Moments"
[Wache Momente]

4x14 "Message in a Bottle"
[Flaschenpost]

4x15 "Hunters"
[Jäger]

4x16 "Prey"
[Beute]

4x17 "Retrospect"
[Im Rückblick]

4x18 "The Killing Game - Part I"
[Das Tötungsspiel - Teil 1]

4x19 "The Killing Game - Part II"
[Das Tötungsspiel - Teil 2]

4x20 "Vis à Vis"
[Vis à Vis]

4x21 "The Omega Directive"
[Die Omega-Direktive]

4x22 "Unforgettable"
[Unvergessen]

4x23 "Living Witness"
[Der Zeitzeuge]

4x24 "Demon"
[Dämon]

4x25 "One"
[Eine]

4x26 "Hope and Fear"
[In Furcht und Hoffnung]