Series 4
13 episodes · Sep 27, 1981
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S4E1Rescue
Sep 28, 198150mDorian, owner of the spaceship Scorpio, rescues the crew from Terminal. He tries to enlist the help of Orac to build a teleport mechanism for Scorpio and attempts to kill the crew.
S4E2Power
Oct 5, 198150mThe Scorpio, rendered inaccessible by an elaborate security system, is stolen by a native of the planet who seeks to escape. Avon completes the Scorpio teleport system with the help of Orac.
S4E3Traitor
Oct 12, 198150mThe planet Helotrix is falling easily to attack from a new Federation pacification drug, as are many other star systems. Tarrant and Dayna teleport down to the surface to investigate. Servalan, deposed of her presidency in the Federation, is back under the alias Commissioner Sleer having wiped all records connecting herself with the identity of Servalan.
S4E4Stardrive
Oct 19, 198150mAfter attempts to match the course of an asteroid for cover result in collision with the asteroid and severe damage to Scorpio's engines, the crew search for an experimental stardrive developed by an ex-Federation designer who is now working for a terrorist group.
S4E5Animals
Oct 26, 198150mDayna meets an old friend, Justin, to seek help with synthesizing an antidote to the Federation pacification drug. Servalan learns of Scorpio's visit to Justin's planet and of the genetic research he is performing there.
S4E6Headhunter
Nov 2, 198150mThe crew rescue a protege of Ensor's who instead turns out to be his android creation seeking to unite with Orac.
S4E7Assassin
Nov 9, 198150mServalan hires an assassin to kill the crew by luring them to a trap set aboard the assassin's ship.
S4E8Games
Nov 16, 198150mThe scientist Belkov has stripped a planet of a valuable crystalline substance and tries to double cross both Servalan and the Scorpio crew in an attempt to escape with the private stash he has collected. He is aided by his computer, an amalgamation of a standard Federation computer and a pleasure planet gaming machine.
S4E9Sand
Nov 23, 198150mServalan investigates a planet which contains an unknown substance of potential usefulness whose investigation team mysteriously died. The crew learn of Servalan's trip and decide to investigate for themselves.
S4E10Gold
Nov 30, 198150mA plan to steal a shipment of atomically converted gold being transported from the planet Xeroc aboard a domestic passenger ship winds up turning into a major loss for the crew.
S4E11Orbit
Dec 7, 198150mThe scientist Egrorian offers Avon a powerful weapon, the Tachyon Funnel, in exchange for Orac. Servalan, who is behind the transfer, prepares a plan to double-cross Avon that would give her both the Tachyon Funnel and Orac.
S4E12Warlord
Dec 14, 198150mAvon tries to form an alliance to produce an anti-pacification drug by negotiating with the leaders of three warring star systems. The Xenon base is sabotaged by explosives and a deadly virus. Tarrant falls in love with the daughter of the saboteur.
S4E13Blake
Dec 21, 198150mAfter Orac traces Blake's trail to the planet Gauda Prime, Avon and crew travel there, leaving the destroyed Xenon base behind. Scorpio is attacked on approach to the planet and crash lands on the surface of Gauda Prime. Avon and crew travel in search of Blake, and discover that he may have sold out to the Federation.