Star Trek: Deep Space Nine

Aliens implant false memories of psychological trauma inside O'Brien's brain, causing him anguish as he tries to fulfil his regular duties. Starring Colm Meaney

Sisko is forced to follow Jake into a parallel universe, where a mirror image of O'Brien prevents him from leaving

Odo provides a safe haven for a pregnant Lwaxana Troi as she tries to stop her Tavnian husband laying claim to her unborn child

Sisko suspects his girlfriend of being a smuggler for the Maquis and decides to follow her

Odo seeks advice from a suave 1960s crooner on how to overcome his inhibitions. Sci-fi adventure, starring Rene Auberjonois and Avery Brooks

A mysterious prophecy predicts a titanic struggle which will result in either 1,000 years of peace for Bajor - or the total destruction of the space station. Starring Avery Brooks

Jake and Nog are attacked by Jem'Hadar soldiers and beamed on to the USS Valiant, a warship crewed by Starfleet cadets

A new law allowing Ferengi women to appear clothed in public and conduct business means that Zek loses his rank as Grand Nagus

An accident causes problems for O'Brien when his eight-year-old daughter is transformed into a wild teenager

The crew races to save a Starfleet captain stranded on an oxygen-starved planet. Sci-fi adventure, starring Avery Brooks

Part one of three. Sisko ignores the warnings of the Prophets and leads an incursion into Dominion territory

Part two of three. Captain Sisko's future depends on a figure from the past as the galactic war continues

Part three of three. As Sisko's quest for the Orb of the Emissary falters, Kira challenges a superior Romulan force