Stargate Atlantis

A crystalline entity invades the dreams of the Atlantis crew in the form of Sheppard, and is intent on destroying the expedition by invoking nightmares

Sheppard is captured by a race of human travellers that believes his Ancient gene is the key to reviving a powerful deactivated warship. Guest starring Jill Wagner

A virus causes amnesia in everyone but Teyla and Ronon, who must work together to restore the crew's memories. Starring Rachel Luttrell

During a visit to New Athos, Teyla and Dr Keller find themselves on the run from a primitive tribe of warriors. Guest starring Jewel Staite

The team meets an extraordinary prophet named Davos, who claims that Wraith hive ships are closing in on Atlantis' position. Guest starring Martin Jarvis

McKay's sister Jeannie Miller is kidnapped by Henry Wallace. The estranged siblings must work together to help cure Wallace's daughter of leukaemia. Guest starring Kate Hewlett

Part one of two. A mysterious probe crashes into the city-ship, convincing the crew members that the Replicators have finally found them. Guest starring Torri Higginson

Part two of two. Atlantis crew forges an uneasy alliance with a captured Wraith to make contact with the hive fleet. Guest starring Jill Wagner