Sigourney Weaver returns as Ripley in the third instalment of the series, as her escape pod (from the end of Aliens) crash lands on a penal planet.
Ripley, alone once again, must convince both the prison staff (including Charles Dance) and the prisoners that something alien has joined them.
But it's only when the killings begin that the prisoners believe Ripley's tale and join her in the battle for survival.
Directed by David Fincher.
(1992) Cert: 18